turns out 1.19 was never intended to add SSM missiles
i will show how to add them though
replace this text in the Researchareas2 file
[Missile technology 19]
PicName=Missile.jpg
Guided bomb;1943;N;70;12;1900;Increases air attack effectiveness
Early ASM;1943;N;60;10;1907;Enables air attacks with ASM
Early SAM;1945;N;70;12;1905;Enables early SAM mounts
Early SSM;1949;N;70;12;1901;Enables early SSM mounts
Double SAM launchers;1953;Y;70;6;1909;Allows double SAM launchers
Improved SAM;1954;N;70;12;1906;Increases SAM hit rate
Reliable SSM;1955;N;70;12;1902;Increases SSM hit rate
Reliable ASM;1955;N;70;12;1902;Increases ASM hit rate
Improved guidance systems;1957;N;70;12;1904;Increases missile hit rate
with this
[Missile technology 19]
PicName=Missile.jpg
Guided bomb;1943;N;70;12;1900;Increases air attack effectiveness
Early ASM;1943;N;60;10;1907;Enables air attacks with ASM
Early SAM;1945;N;70;12;1905;Enables early SAM mounts
Double SAM launchers;1953;Y;70;6;1909;Allows double SAM launchers
Improved SAM;1954;N;70;12;1906;Increases SAM hit rate
Reliable ASM;1955;N;70;12;1902;Increases ASM hit rate
Improved guidance systems;1957;N;70;12;1904;Increases missile hit rate
this adds all types of missiles (light to heavy for sams and SSMs)