I've never used the Gravis software, and it was a long time ago when i edited my last CONFIG.SYS and AUTOEXEC.BAT, but i'd try to run the utility with a "clean" config. I mean, a config without any TSR's, and without any additional EMM386 parameters. You seem to be using Win9x's DOS, so you could try to boot an older DOS versions, too.

Yeah, I get the same thing.
If you start Mega-Em without EMM386.EXE loaded, the program drops the following hint:

Mega-Em wrote:

This program requires an EMM which is compliant with LIM EMS 4.0 and VCPI. Examples of suitable managers are QEMM386, 386MAX or the EMM386.EXE supplied with DOS 5, DOS 6 or Windows 3.1.

I didn't try out the managers mentioned yet, but that really seems to be the way to go...

Yes but as Addict says everything that is not absolutely needed should
be removed during testing, ie. start with a clean config.sys/autoexec.bat
pair, add "device=himem.sys" and "device=emm386.exe ram" and see
how far it gets. If it works, add the remaining lines one by one to see
which program is incompatible (ifshelper might be as it's windows related).
If it doesn't work, see if you get it to work with different emm386 parameters
or some emm386 replacement.

Thanks for the tips, guys 😀

Going to try with a very basic autoexec and config and see what happens

Would be great to get the MT32 midi working since I'm very pleased what this card has showed me so far...never heard the Pinball Fantasies music sound this thick and clear compared to the Amiga version I'm use to

On some other forum there's a note that megaem does not work with
the win95-delivered emm386 (same error message as what you got),
which one are you using? Maybe try the one from msdos 6.22.

wd wrote:

On some other forum there's a note that megaem does not work with
the win95-delivered emm386 (same error message as what you got),
which one are you using? Maybe try the one from msdos 6.22.

Well, that's basically what the Mega-Em message says, it will only work with EMM386.EXE from MS-DOS 5 / 6, Win 3.1, or QEMM386 / 386MAX.

that's basically what the Mega-Em message says

Um if it was written/published before win95 (or that part coded in that era)
they of course won't mention compatibility with win95's emm386.
But as you say it's likely that they don't work with win95's emm386 as the
structures/location of structs has changed, or is protected.

5u3 wrote:

wd wrote:

On some other forum there's a note that megaem does not work with
the win95-delivered emm386 (same error message as what you got),
which one are you using? Maybe try the one from msdos 6.22.

Well, that's basically what the Mega-Em message says, it will only work with EMM386.EXE from MS-DOS 5 / 6, Win 3.1, or QEMM386 / 386MAX.

Running Win98 DOS here....version 7.10 I think

Anyone of you guys know where to find the DOS 6.22 EMM386.EXE and know if it works with DOS 7.10?

Maybe try the one from drdos (search for edrdos or opendos, the sources
have been officially made public), that's the most msdos-compatible one,
and hopefully they have some emm386/it is usable with megaem.

Hmmm... Now I've tested two GUS cards, two EMM386 versions and two variants of Mega-Em; it still doesn't work, same error message.

Details:
OS: MS-DOS 7.10 (supplied with Win98SE german language version)
Drivers loaded in memory: IO.SYS, COMMAND.COM, HIMEM.SYS, EMM386.EXE, nothing else
GUS cards: GUS classic, GUS PnP
EMM386 versions tested: v4.95 (Win9x), 4.49 (DOS 6.22)
Mega-Em versions: v2.07, v3.11; with variations of possible parameters.

I also tried some BIOS changes (those concerning ISA bus behaviour). The only thing I've achieved is that my GUS PnP and AWE32 PnP have started fighting over the same IRQ again. 🙄 But I digress.

You guys have been right, the EMM386 version doesn't seem to be important after all.

Guess it's the DOS version then that's important?

Seems odd when they released the Gus ACE in 1995 when Win95 existed

if its just the dos version try

SETVER [drive:path] filename 6.22

Davros wrote:

if its just the dos version try

SETVER [drive:path] filename 6.22

Can you please give a live example of that

you mean like SETVER C:\blabla\6.22 or point to a textfile with 6.22 in it?

Try

1SETVER C:\PATH\PROGRAM.EXE 6.22

to run c:\path\program.exe and reporting to it that the DOS version is 6.22

Kippesoep wrote:

Try […]
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1SETVER C:\PATH\PROGRAM.EXE 6.22

to run c:\path\program.exe and reporting to it that the DOS version is 6.22

Successfully set DOS version 6.22 for megaem.exe (version 2.07) but it gave the same error message

c'mon, someone here must have run the megaem stuff with success?

boot from a floppy containing dos 6.22
http://www.bootdisk.com/bootdisk.htm

Got it working!!! on my new 486 pc with the Gravis Ultrasound Classic rev 3.4

The Pc is running good old MS-DOS

Man..the MT32 emulation isn't sounding anywhere near my Lapc-I 😵

using a dos 6.22 boot disk ?

Davros wrote:

using a dos 6.22 boot disk ?

Nope, using a real DOS6.22/Win3.11 installation