check your file monarchs.swe in DB\monarchs.
this section should look like this:
#####################
#Erik's Vasa dynasty#
#####################
historicalmonarch = {
id = { type = 6 id = 06303 }
startdate = {
year = 1560
month = september
day = 30
}
deathdate = {
year = 1581
month = july
day = 16
}
name = "Erik XIV"
DIP = 6
ADM = 6
MIL = 7
dormant = no
remark = "Forced to abdicate and imprisoned by his two brothers, Dukes Johan and Karl."
}
historicalmonarch = {
id = { type = 6 id = 06319 }
startdate = {
year = 1581
month = july
day = 17
}
deathdate = {
year = 1611
month = october
day = 30
}
name = "Erik XV"
DIP = 6
ADM = 7
MIL = 6
dormant = yes
remark = "Gustav the son of Erik XIV."
}
######################
#Johan's Vasa dynasty#
######################
historicalmonarch = {
id = { type = 6 id = 06304 }
startdate = {
year = 1568
month = september
day = 29
}
deathdate = {
year = 1592
month = november
day = 17
}
name = "Johan III"
DIP = 6
ADM = 6
MIL = 6
dormant = yes
}
historicalmonarch = {
id = { type = 6 id = 06305 }
startdate = {
year = 1592
month = november
day = 18
}
deathdate = {
day = 30
month = april
year = 1632
}
name = "Sigismund"
DIP = 5
ADM = 5
MIL = 6
dormant = no
remark = "Forced out of Sweden by his uncle, Duke Karl, in a brief civil war."
}
historicalmonarch = {
id = { type = 6 id = 06320 }
name = "Johan IV"
startdate = {
day = 30
month = april
year = 1632
}
enddate = {
day = 19
month = may
year = 1648
}
DIP = 8
ADM = 7
MIL = 7
dormant = yes
remark = "Son of Sigismund"
}
if this doesn't work, there might be a need to edit the savegame file, but let's start with this.