need help saving map in newjassgen world editor

I have been unable to save any maps using the newjassgen world editor. Each time i attempt to do so, it pops up the attached error img. This also causes my jasshelper and newjassgen world editor to hang. Please advise.



p.s: the map i am editing was previously modded in this program by a friend so it is compatible.

have you updated your jasshelper version since you started using jngp? if not, do so now: the jasshelper version that was included in 5c was really buggy, and gave errors of all sorts, when there really where none. so go to the jasshelper thread, and download the actual version, and see if that helps.
apart from that, after the image that you attached, does jasshelper show any syntax errors? or does it freeze at the point shown in the image?

I have this bug since newgen 1.5c, 1.5d and the newest jasshelper, always same problem when there are syntax errors.
jasshelper 0.9.E.0 however works for me

it freezes, need to close jasshelper with task manager

jasshelper 0.9.E.0
I use it!

That is far from the latest version.