Hi, I just tried to run the game with new dosbox and it crashed, but it worked under old one. What gives? Anyone else had the same problem? I disabled sound, but still when I tried to run it using the prince.exe command, it showed some weird and complicated error. What gives? Anyone has any idea as to what can I do to correct this?

Very simple.
Have two versions of DosBox installed.

I would rather run it on new one, where it would run faster.

You can report it on the DOSBox official site, and they'll work on it. I myself have 0.61 and 0.63 on my computer, and when I'll get to it I'll also have 0.65. If one of them don't work, I'll just use another until it works fine.

I experienced a Problem with DosBox 0.65, too. It's a bit more strict with the mounting of drives. I used to have in the autoexec that there's C: mounted as C:
DosBox 0.65 told me that this isn't recommended and so I chose the drag&drop solution and it worked better.

Edit: Nvmd.

Right now I have three versions of DosBox installed - 0.61, 0.63 and 0.65.

loadfix -d
before starting prince.exe