Xellath is right. This forum is far from dead. Every time i needed help with anything i got it. Just ask for it in proper section and i am sure they won't just ignore you! It would be pity to leave this plugin unfinished just because of this problem. Once i was trying to solve problem in my code for ONE WHOLE day but at the end i found it and fixed it and now it works perfectly.
Just don't give up, you already did a lot of work on this plugin. Don't throw it out of the window just because of this ;)
At first you should try to identify when does the server crash. Get some friends and play. And then when server crash ask them what were they doing at the moment the server crashed. Where they were standing. What did they did earlier that round. This is scripting language. It's just hooking to their behaviour. There must be way how to find out. You maybe won't get line, but you could find out in what part you should look for and then it will be easy to find the problem.. Commenting piecies of code, trying to crash server again with different code.. For me it's almost best part of programming.. It's just like detective story. There is some bad piece of code killing your server all over and over again.

;)
There is always the way.