11/30 Janne252 Need a little help here. Same problem with running in thru Steam/game properties since it wont recognize the shortcut method. Bugsplat comes up. I followed all of it to a tee, but there is one area that does not seem to work as you stated. The part with the .sga conversion back into the FirstMod. Could you re-clarify that process. It says something "does not exist" but flashes by so fast cant tell what its referring to. This seems to be the one area I may have not in proper order or placement.
11/30 Follow Up: Of note, I think I made the mistake of assuming the extractor and the builder is one and the same. The SGA Builder made a difference in giving me the files as you stated should in in location....testing game launch.
11/30 Follow Up: The game crashes to desktop at approx. 20s. I did double check the ignore-unsigned-sga-v2b.fnt and its located in the right folder.
Drag and drop your FirstMod_Data.sga file over the SGA extractor (cc2sga.exe, don't mix it with pc2sga.exe which is SGA Packer) to see if the .fnt is actually in the archive.