Black Screen on Startup sometimes - dBase program

[alansdbase]

I am running a multiuser Wampum (Clipper indexes) program "that keeps on keeping on" and vDos has been an amazing solution. 
For some reason scince we moved to the 2019.5 (latest) version we sometimes get a black screen on startup.

When we startup we get the vDos "registered to" splash screen  a minute or so after startup and sometimes after we click on the

splash screen we get a black screen in the vDos window and we have to end the task (Cntrl-Alt-Del) which does not do

the indexes any favours and we are having to reindex. 

I did wonder if this was a memory/graphics issue and whether changes to the Config.txt may alleviate it.

I tried making a coupleof changes to the XMEM statement but I obviously had the syntax wrong...
 
although the application manual says 2-4 MB of extended memory is useful 




 

[alansdbase]

Followup - I have the User name Licence - Should I have the Network License (Euro 250) ? will tis remove the nag screen and possibly my issue ?

[Jos]

A black screen doesn’t ring a bell. If it only occurs after the nag is displayed: The virtual PC is put on halt until you click the nag away, could be it’s some timing issue with Clipper or one of its libraries.

You already have a Network license. The nag popping up with “Registered to …” would mean vDos is running with another server name, or the license file is damaged.
You shouldn’t get the nag, could you send me a copy of license.txt and a screenshot of the nag.

The XMEM directive is removed from config.txt, XMS and EMS memory are fixed at 10MB. I doubt the black screen is related to the amount of memory.

Jos

[alansdbase]

Thanks Jos - Ahh that makes sense we made some changes recently and the server name changed. I think I can simply change it back ....will see if that calms things down...

[Jos]

If you mail me directly and supply the new server name, I’ll send you a new license file.

Jos