I'm trying to play on Kubuntu Linux. If I install using the GOG installer in PlayOnLinux, the game installs normally to a Wine prefix and then automatically starts up and plays perfectly. After that, nothing I do in PoL or directly through DosBox will make Castles 2 run again. Attempting to open C2CD.bat in DosBox leads to "Couldn't find CD-ROM!" error.

Not sure what else to add. I can post more information if anyone thinks it will help.