Checksum Error problem

[RAD]

Hello. I recently purchased a Virus Classic desktop synth, and I decided that I would like to update the unit to 8 banks. After downloading the update, I tried to load it into the unit, only to receive a Checksum Error message. I tried to update it using Pro Tools LE 6.4, Nuendo 2, Sonar 3, and Windows Media Player. I also had the tempo set very low. The interface I use is a Digidesign 001, and I am running Windows XP Pro on an AMD based computer.

I checked through the manual, searched here, and contacted Access, but have been unable to figure anything out. I would like to know if anyone here has any suggestions. I wonder if it might be my 001, but I don't have another interface handy to try. If anyone has any information that might be useful, please let me know.

Thanks,
Ron

[jasedee]

There are a few settings that need to be made, for optimizing the Virus for use with sequencers, which is covered in the manual...

Once these have been made, if you are using the Virus with PT (or any others) and having no problem sending/recieving MIDI from the Virus, the update should be relatively easy..

Go through the manual...all information is there (sorry dude, I cant be fucked pulling out the manual and copying words from it....)

Dont give up!!!! :)

[RAD]

I have read the manual, and have done everything specified. Actually, the unit works fine with my software otherwise, although if it is worth anything, the loopback test in Sounddiver didn't complete. I have the unit set to the same channel as the software, I have disabled Midi Clock RX, enabled Midi dump RX, set the tempo very low, and I still get the checksum error. It occurs almost immediately after I press play. Also, just to be sure that the manual wasn't wrong, I went back and tried the update with different settings. This is why I am looking for specific information. The manual hasn't helped, and I though that perhaps someone here who has either had the problem or who has done this successfully could comment on what might be going wrong.

[jasedee]

Could very well be the 001 then...

Is there a MIDI driver update??? Perhaps you can get an external MIDI interface, but I guess a solution that doesnt lead to the purchase of more gear would be better...

Hope someone else here can lend a hand?

Good luck!

[Onkel Dunkel]

How fast do you play back the MIDI-file (BPM)? I think a had a similar problem that was solved by lovering the the BMP-rate...

[Onkel Dunkel]

I also had the tempo set very low.

Oh, sorry, missed that...

[thedjfx]

I'm having a similar problem trying to dump the contents of my Virus into Logic7. My MIDI interface is a MOTU 828mk2
The data seems to record into logic OK as I can go into the "Event" editor and see the data in there - so far so good.

Now, this used to work fine in my Atari ST days, but when I try and play the data back to the Virus (Sysex receive is set to "Enable") I get an error message on the Virus display saying "invalid sysex checksum" and the patches refuse to load properly - the names are all jumbled up etc..
The litte "SE" appears in the top left of the Virus display, so I know its receiving something, but I'm not sure if theres some other setting I'm misssing, or if Logic is distorting the data in some way?
My MIDI interface is MOTU 828

I've posted this on a few forums now, but no joy so far!

Anyone managed to solve this yet?

[ledge]

The Digi is probably the problem, though it should work. I'd only use the digi to play the file as having other programs trying to use the digi's midi ports will only end in tears. Make sure the digi is all up to date with patches etc. and I had to make the digi002 playback very slowly to get it to load properly when I originally did it (60bpm or so).

Have you tried re-downloading the file? it could be corrupt.

If you are still having problems you might try the digidesign forums as they are usually pretty good.

If all else fails buy a midi interface as that is what I did and loading patches, os updates etc was suddenly a lot less painful, but then doing updates wasn't the reason I got one.

[grs]

I had problems once with 5 meter midi cables. I swapped it over with a 1 meter cable and it worked.

[blay]

I had problems once with 5 meter midi cables. I swapped it over with a 1 meter cable and it worked.

and even if your cables arent that long - if they are cheap then chances are they could be dodgy. try borrowing a set from a friend....

cheers

blay

[thedjfx]

Thanks for the replies people - I will try changing the cables - didnt think of that one yet!

I got this back from the Access tech dept...

"Thank you for your mail. The settings on the Virus are correct and this error message simply says that data didn't arrive correctly in the Virus at all. It's hard to say what might be the problem. Either the data was already recorded wrong or the Midi interface scrambles the data when trying to send it back to the Virus.
The Atari ST was rock solid concering this - I know."

so I dont think its a Virus settings problem, more likely things have got a lot more complex since i moved in the G5 in place of my trusty ST...

[udenjoe]

I noticed this as well with my Mac. Maybe it's a Mac problem with the Virus? Maybe something similar to xml loading on images after photoshopping? Possibly something the mac does when you save to the HD? Just threw that out there.

One way to test is doing it with a PC.

Maybe a factory reset is in order before loading the patches?

I ran the giant patch bank from the ampfea.org site. It said the checksum error but the patches loaded anyway...

But I never had problems loading things to other synths.

[jasedee]

I have had no troubles with MAC, but I am using the MOTU Microlite MIDI interface.

I think this is key in these situations.....you need a decent MIDI interface

[fordi]

I have just had this problem too, i thought it would be a good idea to do a dump tx into logic 6 so that i could use the virus in other arrangements. The dump seemed to transfer ok, i changed a setting on one of the midi channels, then tried restoring the dump into the virus as a test. The next thing i have a checksum error and all the patches dont play anymore, just getting a half note. i cannot believe it......

My gut reaction is that i have to reinstall the operating system in order to get the virus working again?