After adding 'ExportSingleCharacter' to the script oncliententer the server crash. It seems that is no longer server crashing after removing export single character from on client enter
Thats really weird, NWNX_Files cant be reponsible for this it doesnt modify nwn memory in any way it doesnt work like other plugins and it cant make conflict with any other plugin its 100% safe due to the way it works.
It must be different plugin causing this, nwnx_events modifies ExportSingleCharacter so I would try that one, at any rate, you have two options.
1) don't use ExportSingleCharacter at OnClientEnter (btw for others: I suggest this to him as it makes searching for newest bic file in folder more reliable)
2) keep it there and then find which plugin it is by a "removal of the single plugin at the time" method, then if it will be nwnx_files or nwnx_patch causing this I can and I will offer support for this issue, if it will be nwnx_events the only solution would be probably to check if there isn't newer version (or switch to nwnx_cool completely)