I downloaded the Generations mod for the first time yesterday and tried it out. I wanted to share a problem (and the solution) I had, in hopes that no one else will be tripped up by it.
I was getting a hunk_alloc error, but setting com_hunkmegs didn't fix the problem entirely for me. Turns out I had an additional snafu:
I and friends have our setup so that the autoexec.cfg in baseq3 launches a local cfg in a given mod directory. So I don't have auto'execs in the mod directories, but instead autolocal.cfg files, which I exec from autoexec.cfg in the baseq3.
Apparently, this confused generations. Renaming your autoexec.cfg to autolocal.cfg so that it was launched by my autoexec.cfg appeared to clear up the problem.
It is probably the lack of some of the other settings that I have in the autoexec that makes the difference, but I'm not going to go hunting for the specific one.
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All that said, I want to re-iterate what's been said elsewhere: Generations won't work without your com_hunkmegs set high enough! So make sure you have that first! (This is not the only mod that has this issue!)
f.