Yes, the GOG version is v4.13.4m (14395). I'm not sure if they also have an older version that is more mod compatible however you can use this little batch file to downgrade v4.13.4 to v4.12.2
https://www.sas1946.com/main/index.p...c,55464.0.html
Now can someone who has the authority here, can we please get Steam to update IL-2 1946 to the current official v4.13.4
EDIT: TD have uploaded to Steam v4.13.4 but you have to go into the game properties and select the 'beta' option to get it. The default version is still 4.12.2.