Space Quest 6 - game crashes

[Nowhere Girl]

I realise Space Quest 6 is not supported by Scumm VM anyway, but perhaps someone will be able to help me...

I'm having a lot of bugs and such problems with Space Quest 6 and I would really love to complete this game.
Technical specifications: I use a relatively old laptop with Windows 7. I play all DOS games through D-Fend Reloaded (DOSBox with frontend, but you probably know it) and actually I really love it because of the screenshot collecting option... without it I perhaps wouldn't have bothered to play some of the games I have.
If I remember well, I didn't have any issues with the (in)famous ComPost bug, probably because speed is not really an issue when using an emulator (which is anyway quite necessary nowadays - I could still run some DOS games on Windows XP, now not anymore).
For a long time I couldn't pass the "robots" bug (which made the game crash at Stellar's funeral), which is why I don't remember for sure if I had any problems with some of the well-know bugs - I became discouraged and haven't played the game for months, yesterday I finally passed it. (The solution that worked for me is NOT exactly what is said on Sierrahelp - using the exact path of the "Robots" directory in resource.cfg file didn't help, it finally kicked into gear when I changed it to "robot = .\robots".
However, I didn't get far...
First let me return to the beginning because I encounter the same bug there. I can't run the full intro (I think). It crashes right after Roger is degraded and a small message appears:

Alert
VMD error -51 -> IMD unknown
1075
..\vmdcache.cpp(374)

I get the same message when I try to leave the space station with the spaceship, only the number after "IMD unknown" is now 1450.
I can't find any help about those bugs elsewhere.
Am I missing any files? What can I do about it?
I would really like to complete the game and now a bug stops me for good again...

[Tomaso]

Have you tried to install the game using Sierra's new SQ6 installer?:
http://sierrahelp.com/Patches-Updates/N ... ers.html#S
It has been specifically designed with DOSBox in mind.

[Nowhere Girl]

I don't, ugh, have a CD.
I, ugh, made some changes and now I'm away to another bug. Now I no longer know which file should I use to run the game, what should I do about resource.cfg, but I can't run the game - a completely different bug appears. Perhaps you know the solution? I read that the paths in resource.cfg must match the ones in the game, but how do I do it? What is game mounting exactly? What's the difference between the game's disk path and DOSBox path or however they should be called? Its disk path is:
C:\Users\Ewa\Gry\Space Quest 6
- so what should be in resource.cfg?
I'm no computer specialist and that's why I'm unable to play with those path names, they only made me get lost.

Edit: if I run the game through sierra.exe, it says: "Error loading resource 999.pal" (a known bug, it seems).
If I run the game through sq6dos.bat, it says: "Invalid file name" or something like that (however it would sound if it was in English).

[Raziel]

Where did you get the game?
Maybe it's an unsupported version (not that it's supported yet anyway, but still...)

You can try to run the game with switch -o

sierra.exe -o

It should work (at least that's what the wiki says for the dos version)