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DDR.inc doesn't include the lines I mentioned, DFR.inc doesn't include them and the GER.inc file doesn't exist anymore.
E: The crash wasn't caused by this, but it still complains about these.
 
DDR has an army, but I've given them new id's. But none of them are the ones the game is complaining about (20000-20055).

Code:
# 18 Jan 07 ASD

country =
{ tag                    = DDR
  belligerence           = 10
  capital                = 82
  manpower               = 850
  transports             = 160
  escorts                = 24
  energy                 = 4000
  metal                  = 4000
  rare_materials         = 2000
  oil                    = 2000 # 15 million barrels stockpile
  supplies               = 1000
  money                  = 100 # gold and foreign currency reserves were exhausted
  policy =
  { date              = { year = 0 month = january day = 0 }
    democratic        = 1
    political_left    = 1
    free_market       = 5
    freedom           = 1
    professional_army = 5
    defense_lobby     = 6 # shifted by Czech events
    interventionism   = 6 # shifted by Czech events
  }
  nationalprovinces      = { 66  67  71  72  73  74  75  76  80  81  82  83  84  85  86  87  88  89  90  91 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 371 372 373 374 375 376 377 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 481 482 483 510 533
                           }
  ownedprovinces         = { 296 297 298 299 300 301 302 308 309 310 311
                           }
  controlledprovinces    = { 296 297 298 299 300 301 302 308 309 310 311 
                           }

  techapps               = { 1010  1020  1030  1070  1110  1190  1200  1210  1220  1230  1310  1340  2010  2020  2030  2040  2070  2150  2290  2300 
                             2310  2320  2330  2400  2410  2450  2460  2510  3010  3020  3030  3070  3080  3090  3100  3130  3140  3150  3160  3190 
                             3200  3210  3220  3250  3260  3270  3280  3320  3330  3340  3400  3410  3420  3430  4010  4020  4030  4040  4050  4120 
                             4130  4140  4170  4190  4250  5010  5020  5030  5050  5060  5070  5080  5090  5100  5190  5200  5210  5310  5320  5350 
                             5360  5410  5470  5480  5490  5550  6210  6220  6230  6240  6250  8010  8020  8040  8080  8090  8150  8160  8210  5290
                             9010  9020  9030  9040  9050  9060  9070  9090  9100  9110  9120  9140  9190  9200  9270  9290  14000 14010 3470
                           }
blueprints             = { 6260 }

  diplomacy =
  { relation = { tag = AFG value = 25 }
    relation = { tag = ARG value = 75 }
    relation = { tag = AST value = -50 }
    relation = { tag = BEL value = 20 }
    relation = { tag = BHU value = -50 }
    relation = { tag = BOL value = 15 }
    relation = { tag = BRA value = 50 }
    relation = { tag = BUL value = 85 }
    relation = { tag = CAN value = -50 }
    relation = { tag = CHI value = 1 }
    relation = { tag = CHL value = 50 }
    relation = { tag = COL value = -20 }
    relation = { tag = ENG value = -100 }
    relation = { tag = EST value = 10 }
    relation = { tag = FIN value = 80 }
    relation = { tag = FRA value = -100 }
    relation = { tag = HOL value = -150 }
    relation = { tag = HUN value = 150 }
    relation = { tag = IRE value = 50 }
    relation = { tag = IRQ value = 25 }
    relation = { tag = ITA value = 100 }
    relation = { tag = JAP value = 75 }
    relation = { tag = LAT value = 10 }
    relation = { tag = LIT value = 10 }
    relation = { tag = LUX value = -50 }
    relation = { tag = MAN value = 20 }
    relation = { tag = MEN value = 20 }
    relation = { tag = NEP value = -50 }
    relation = { tag = NOR value = -150 }
    relation = { tag = NZL value = -100 }
    relation = { tag = OMN value = -150 }
    relation = { tag = PER value = 50 }
    relation = { tag = POL value = -200 }
    relation = { tag = POR value = 75 }
    relation = { tag = ROM value = 120 }
    relation = { tag = SAF value = -50 }
    relation = { tag = SCH value = 50 }
    relation = { tag = SOV value = 20 }
    relation = { tag = SPA value = 50 }
    relation = { tag = SWE value = 50 }
    relation = { tag = TUR value = 60 }
    relation = { tag = YUG value = 50 }
    relation = { tag = USA value = -50 }
  }

  headofstate            = { type = 9 id = 1 } # Hitler
  headofgovernment       = { type = 9 id = 2 } # Hess
  foreignminister        = { type = 9 id = 55 } # Ribbentrop
  armamentminister       = { type = 9 id = 79 } # Goering (4 year plan)
  ministerofsecurity     = { type = 9 id = 108 } # Himmler
  ministerofintelligence = { type = 9 id = 6 } # Canaris
  chiefofstaff           = { type = 9 id = 155 } # Halder
  chiefofarmy            = { type = 9 id = 174 } # Brauschwitz
  chiefofnavy            = { type = 9 id = 2636} # Raeder
  chiefofair             = { type = 9 id = 10 } # Goering
  dormant_ministers      = { 33 45 46 51 3 64 4 77 5 116 7 8 179 }
  dormant_leaders		 = { 293 579 }
  nationalidentity = "policy_identity_parochial" 
	socialpolicy = "policy_social_ethnic" 
	nationalculture = "policy_culture_ethnic"

  landunit =
  { id       = { type = 17564 id = 1653 }
    name     = "I. Armeekorps"
    location = 510
    division =
    { experience    = 10
      id            = { type = 17564 id = 3456 }
      name          = "1. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 2
      extra         = artillery
      brigade_model = 4
    }
    division =
    { experience = 10
      id         = { type = 17564 id = 3476 }
      name       = "11. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 2
    }
    division =
    { experience = 10
      id         = { type = 17564 id = 3275 }
      name       = "21. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 2
    }
  }
  landunit =
  { id       = { type = 17564 id = 1968 }
    name     = "II. Armeekorps"
    location = 302
    division =
    { experience    = 5
      id            = { type = 17564 id = 12856 }
      name          = "12. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 2
      extra         = artillery
      brigade_model = 4
    }
    division =
    { experience = 1
      id         = { type = 17564 id = 23434}
      name       = "32. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 1
    }
  }
  landunit =
  { id       = { type = 17564 id = 96554 }
    name     = "III. Armeekorps"
    location = 300
    division =
    { experience    = 5
      id            = { type = 17564 id = 28573 }
      name          = "3. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 2
      extra         = artillery
      brigade_model = 4
    }
    division =
    { experience = 10
      id         = { type = 17564 id = 58918 }
      name       = "23. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 2
      extra      = engineer
    }
  }
  landunit =
  { id       = { type = 17564 id = 28537 }
    name     = "IV. Armeekorps"
    location = 311
    division =
    { experience    = 10
      id            = { type = 17564 id = 21325 }
      name          = "4. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 2
      extra         = artillery
      brigade_model = 4
    }
    division =
    { experience    = 4
      id            = { type = 17564 id = 31163 }
      name          = "14. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 2
      extra         = anti_tank
      brigade_model = 1
    }
    division =
    { experience = 1
      id         = { type = 17564 id = 15362 }
      name       = "24. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 1
    }
  }
  landunit =
  { id       = { type = 17564 id = 27653 }
    name     = "V. Armeekorps"
    location = 314
    division =
    { experience    = 15
      id            = { type = 17564 id = 26087 }
      name          = "5. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 2
      extra         = artillery
      brigade_model = 4
    }
    division =
    { experience = 10
      id         = { type = 17564 id = 24567 }
      name       = "25. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 2
    }
  }
  landunit =
  { id       = { type = 17564 id = 234534}
    name     = "VI. Armeekorps"
    location = 81
    division =
    { experience    = 15
      id            = { type = 17564 id = 2612336}
      name          = "6. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 2
      extra         = artillery
      brigade_model = 4
    }
    division =
    { experience = 5
      id         = { type = 17564 id = 23239 }
      name       = "16. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 2
    }
    division =
    { experience = 1
      id         = { type = 17564 id = 334340 }
      name       = "26. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 1
    }
  }
  landunit =
  { id       = { type = 17564 id = 154233 }
    name     = "VII. Armeekorps"
    location = 376
    division =
    { experience = 15
      id         = { type = 17564 id = 32132 }
      name       = "7. Grenz-division"
      strength   = 100
      type       = infantry
      model      = 2
    }
    division =
    { experience    = 15
      id            = { type = 17564 id = 354354 }
      name          = "27. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 2
      extra         = artillery
      brigade_model = 4
    }
  }
  landunit =
  { id       = { type = 17564 id = 398359 }
    name     = "VIII. Armeekorps"
    location = 473
    division =
    { experience    = 17
      id            = { type = 17564 id = 418570 }
      name          = "8. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 2
      extra         = anti_tank
      brigade_model = 1
    }
    division =
    { experience = 10
      id         = { type = 17564 id = 4182741 }
      name       = "18. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 2
      extra      = engineer
    }
    division =
    { experience    = 1
      id            = { type = 17564 id = 447852 }
      name          = "28. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 1
      extra         = artillery
      brigade_model = 4
    }
  }
  landunit =
  { id       = { type = 17564 id = 412393 }
    name     = "IX. Armeekorps"
    location = 82
    division =
    { experience    = 10
      id            = { type = 17564 id = 409744 }
      name          = "9. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 2
      extra         = artillery
      brigade_model = 4
    }
    division =
    { experience = 10
      id         = { type = 17564 id = 446355 }
      name       = "15. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 2
    }
  }
  landunit =
  { id       = { type = 17564 id = 121358 }
    name     = "X. Armeekorps"
    location = 88
    division =
    { experience    = 1
      id            = { type = 17564 id = 169489 }
      name          = "22. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 1
      extra         = anti_tank
      brigade_model = 1
    }
    division =
    { experience = 1
      id         = { type = 17564 id = 24570 }
      name       = "30. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 1
    }
  }
  landunit =
  { id       = { type = 17564 id = 498348 }
    name     = "XI. Armeekorps"
    location = 86
    division =
    { experience    = 13
      id            = { type = 17564 id = 5234554 }
      name          = "19. Infanterie-Division"
      strength      = 100
      type          = infantry
      model         = 1
      extra         = artillery
      brigade_model = 4
    }
    division =
    { experience = 1
      id         = { type = 17564 id = 545557 }
      name       = "31. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 1
    }
  }
  landunit =
  { id       = { type = 17564 id = 2555551 }
    name     = "XII. Armeekorps"
    location = 310
    division =
    { experience = 0
      id         = { type = 17564 id = 5444342 }
      name       = "33. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 1
    }
    division =
    { experience = 0
      id         = { type = 17564 id = 522323 }
      name       = "34. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 1
    }
  }
  landunit =
  { id       = { type = 17564 id = 598565 }
    name     = "XIII. Armeekorps"
    location = 312
    division =
    { experience = 15
      id         = { type = 17564 id = 42923 }
      name       = "10. Infanterie-Division"
      strength   = 100
      type       = infantry
      model      = 2
    }
  }
}
 
If you can load the mod by ignoring the error, then:
  1. Save the game
  2. Exit the game
  3. Open the game in Notepad or Notepad++
  4. Now search for the 'type = 7 or id = 20000'

Since all the units are in a saved game file, this should tell which countries have the dups.

I use this trick all the time. Why search numerous files, when you can search just one.