Hello everyone. 
@VIP
I am sorry but, again, this is a mac problem and I never used civ5 on macs, and never used Apple's products for more than one hours in my whole lifetime. I cannot help you at all on this matter. Reading the faq for mac again and posting your questions there is your best hope.
Regarding your offer to beta-test, I appreciate that. Unfortunately, my mods are pretty stable those days and unless new bug are identified I am done with civ5 modding. Besides my policy for beta testing has always been to just release them here, among the comments, and let everyone willing to test it doing so.
@Barcelonic
Regarding the crashes I am pleased to learn that IGE had nothing to do with it. And, no, if a mod is disabled, removing it won't change anything aside of wasting your time. Finally, when it comes to performances, note that IGE is just sleeping when it's closed and does not affect your performances (ok, well, maybe 1ns to 10ns per second actually but I think anyone can deal with that).
@Bilyak
Welcome on CivFanatics and thank you for coming here to report this bug.
IGE had a bug like this in the past and it could be that it resurfaced with the new patch. Or maybe it was still there but could now only occur in very rare circumstances and no one reported it before. The gist of it is this: IGE allows you to do any change to the terrain, yet the civ5's terrain's mesh generator has does not support some combinations (those ones being unknown of course, it's funnier like that for me).
Initially the problem arose from ocean tiles right next to land tiles (without a coastal tile between them). I then made IGE prevent people from doing things like that. But what could it be now? Do you remember which changes you made? Without this information there is nothing I can reasonably do in my spare time aside of waiting for new reports.
Finally, it could also just be a civ5 bug.
PS: Did anyone who gave a look at the dll's source know whether the terrrain's mesh generation is in there? I guess it is actually in the exe but who knows...

@VIP
I am sorry but, again, this is a mac problem and I never used civ5 on macs, and never used Apple's products for more than one hours in my whole lifetime. I cannot help you at all on this matter. Reading the faq for mac again and posting your questions there is your best hope.
Regarding your offer to beta-test, I appreciate that. Unfortunately, my mods are pretty stable those days and unless new bug are identified I am done with civ5 modding. Besides my policy for beta testing has always been to just release them here, among the comments, and let everyone willing to test it doing so.
@Barcelonic
Wth? I would like to see a screenshot if you have one please. That being said, wasn't there a river's extremity on the edge? IGE allows you to place rivers that the 3D engine cannot render properly (it can only deals with rivers starting on land and ending on a water hex, with the corresponding flow direction) and it can results in glitches.Actually a little update: I had a problem whereby any land that I placed using IGE which wasn't on that hex before (ie, was water) would forever be cursed to not display farms properly - you just get the grid and no luscious green fertile farmland![]()
Regarding the crashes I am pleased to learn that IGE had nothing to do with it. And, no, if a mod is disabled, removing it won't change anything aside of wasting your time. Finally, when it comes to performances, note that IGE is just sleeping when it's closed and does not affect your performances (ok, well, maybe 1ns to 10ns per second actually but I think anyone can deal with that).
@Bilyak
Welcome on CivFanatics and thank you for coming here to report this bug.

IGE had a bug like this in the past and it could be that it resurfaced with the new patch. Or maybe it was still there but could now only occur in very rare circumstances and no one reported it before. The gist of it is this: IGE allows you to do any change to the terrain, yet the civ5's terrain's mesh generator has does not support some combinations (those ones being unknown of course, it's funnier like that for me).
Initially the problem arose from ocean tiles right next to land tiles (without a coastal tile between them). I then made IGE prevent people from doing things like that. But what could it be now? Do you remember which changes you made? Without this information there is nothing I can reasonably do in my spare time aside of waiting for new reports.
Finally, it could also just be a civ5 bug.
PS: Did anyone who gave a look at the dll's source know whether the terrrain's mesh generation is in there? I guess it is actually in the exe but who knows...