A map crashing with "Unsupported color conversion request" on nightly builds binaries

[The-Gig]

Hello.
Trying "TrueCombat" Q3 mod (http://www.moddb.com/mods/true-combat/downloads/true-combat-13-full) with OA, it has been noticed that trying to load the map named "Bahamot" casuses the game to crash (tested on Windows with nightly build binaries), with an error saying "Unsupported color conversion request".
The bug happens with nightly builds, while the map works flawlessly with old OA 0.8.8 Windows binaries. Crashing isn't a nice thing, so, although not urgent, I think this may be worth a look before OA3 will be released.

Probably the crash may be caused by some texture with some strange encoding, but I don't know which one.
Probably not the same problem which causes the game to crash in "oacmpctf1" map in OACMP Vol1 v3 (IIRC, jpeg "progressive encoding" not supported in Windows binaries -while supported in Linux binaries-), because that crashed in OA 0.8.8, while the TC "bahamot" map works in 0.8.8 binaries.
Searching a bit, I found this https://dev.etlegacy.com/issues/993 (Enemy Territory Legacy): there, they said the problem was due to a jpg file using "CMYK" color mode. But in their case, it wasn't a crash, it was just a texture not shown, with a warning. So maybe it's yet another thing (grayscale maybe?)...