I installed jagged alliance 2 with the 1.13 mod (7609). I noticed that sometimes the enemy gets an interrupt on me, the top red bar simply freezes with "interrupt!" but the enemy does nothing, i can simply continue my turn while the top red bar stays until i end my turn. I play with the old interrupt system.

When i use ja2_7609en+fix.exe, do I have to install some files or changing current gameDir data for example SCI GameDir 2270?

I haven't patched ja2 1.13 7609, where can I download it?

link to German version was removed.

That was not my intention :-)

If this (and the screen resolution issue?) is the only bug a found a workaround:
Use only 8-member groups and create the party with the original exe.

No I use the 7609 version.

I what did:
- creating a 10-member-party game with 7609 with windowed screen resolution 1024x768, save the game
- with the same setting, the fix.exe tell me the resolution is not high enough..

with the 8-member setting it works (maybe in the code there is only checked for greather/smaller instead of greather/smaller AND equal ?)

Q: Did you change something regarding the IMP character generation? After reading the change log I could not find a match here.

Unofficial ja2+fix.exe release:

Based on stable 7609, includes all post-release fixes from stable trunk.

Also, some additional changes are made to the code:

English version: link

Latest 1.13 version can be found here:

I'll attempt some answers to your questions.

Welcome!

Get the Gold version of JA2 (GOG.com) - less hassles.

You have Win10 -- you will have to apply the Win8+ fixes found in the ../Docs/Windows Compatibility fixes folder. Win10 is not nice to JA2 and older games but can be made to comply.

The "Stable" build (r7609) lacks many of the new features added to v1.13 but has the benefit being compatible with Sevenfm's Experimental Executable which adds most (if not all) of the bug fixes of the latest build, and a much advanced AI (lacking in the latest build). You might as well get them both and try them both out. Once Gold is installed you can copy it to other folders and all of them will work. In that way you can have a latest build install and a 7609 install.

As for mods . . . it's personal preference so try them all -- there's countless months of enjoyment there

Any zip software should work. I use 7zip.

Editing the ini settings is also personal preference for the most part - so again, play and experiment because it's all basically personal preference. The default settings can get you started.

Sevenfm offers a modpack (in his sig) with the mods compatible with 7609. I'm not sure what mods are compatible with the latest build - someone else will have to answer that one.

Wildfire 6.07 should work with latest build without problems, there are also experimental versions of Wil473's mods (AFS and UC) for unstable release. And there is epic Aimnas-Unfinished-Bigmaps mod that works with unstable (though older versions work well with stable 7609).
Simple map mods (like NOps maps) should work, too, but more complex mods will require some XML work to update data.

As for Win10, it's recommended to apply registry patch (but dll patch will work too with some minor graphical problems).

If you want to play stable 7609, I would recommend to start with Arulco Revisited + SDO, as it's well balanced both for NCTH and OCTH and the maps are nice (but read about airport location in report).
For unstable, it's probably best to start with Wildfire 6.07 mod.