Can't map second kernel data area (W8.1 x64)

[Halian]

When starting a fresh copy of SheepShaver on Windows 8.1 x64, I get a "Cannot map second kernel data area: 487" error, no matter what combination of programs are open or closed. A previous thread suggested moving SheepShaver to a flash drive, but that didn't work for me. What am I doing wrong, and how do I fix it?

[Ronald P. Regensburg]

I suppose you searched the forum and found this topic:
http://www.emaculation.com/forum/viewto ... =20&t=7643

Did you also see this topic? :
http://www.emaculation.com/forum/viewto ... =20&t=8143

[Halian]

A very strange error that is, it's like Apple have never heard of memory management.

[Ronald P. Regensburg]

This is with a Windows application on a Windows OS.

(A similar issue with SheepShaver for OSX was resolved a couple of years ago.)

[Halian]

Apple make QuickTime. Nevermind the fact that my PC doesn't even have QuickTime installed.

[neozeed]

The problem stems from how sheepshaver uses memory. It just doesn't allocate a block and use it like a normal program, instead it tries to duplicate a powermac address space in the user space. So the contention is in mapping 0x00000000 and other traditionaly reserved blocks. This is why sheepshaver will eventually be unable to run anywhere.

To fix this it'll take a reworking of how it works in general. It's not a small task.

So like the QuickTime thing you probably have another program occupying that space. You can try killing programs and services but it'll probably be a debugger or Antivirus hoping to catch 0xc0000005 access errors.