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I've been getting a bunch of these errors, mainly in one program (Satscape - http://satscape.co.uk/), but it occurs in others occasionally. I'm just doing whatever in the programs and then I get this error:

Clicking OK closes the program, and clicking Cancel opens the program in Visual C++ Debugger.
Specs:
Windows XP Home edition
Intel P4 2.4 GHZ
512 DDR memory.
Intel Extreme 64MB video card.
160 GB HD.
Freedom antivirus/firewall/spyware protection.
No viruses or spyware that I'm aware of, except that stuff infecting IE6.
Note: the Satscape program is very graphical, so maybe a video problem? I did a full DirectX diagnostic, but no problems found.
Any idea what causes this, and how to fix it? I have a feeling that memory-cannot-be-read errors aren't very specific...

The program tried to read data in an area of memory that it has no access to (aka outside of its own protected area). I think this was called a GPF in earlier Windows versions and if memory serves, would often take down the whole OS. There's no single cause of it happening, it can happen for at least a hundred reasons if not many many more. Reinstalling the program sometimes helps stop the error, but often it's incurable. Even reinstalling the OS sometimes doesn't help.

I too have encountered such errors, specifically with WinXP. I dont know what causes it or how it can be rectified =P

This particular error also shows up in Windows 2000 for the same reasons. Like I said, there's often no way to fix it but sometimes reinstalling the program helps.

Dude, apparently this error occurs more often with WinXP while running DOS programs. I wonder why :roll:

Not for me - I've never had this problem with running XP's DOS emulator. This is a Windows app here.
I suspected that this is a vague error. Eh, I'll have to live with it.

'nother problem:
I look at the processes runnind and I see svchost.exe running in at least 5 instances, each instance taking up at least 1'000 KB of memory. Is that normal?

Quote:'nother problem:
I look at the processes runnind and I see svchost.exe running in at least 5 instances, each instance taking up at least 1'000 KB of memory. Is that normal?

Yes. Take a look at your running services through the Control Panel.

Where in control panel?

Go to "Administrative Tools", and "Services" will be an option. You should consider following some of the many available Services editing guides available on the Internet if you're new to it.