When using the PEExplorer for browsing an image I get the following message: "The instruction at 0x7682e0e5 referenced memory at 0x891dca1. The memory could not be read."
I can browse the same image under a running windows without any problems.
Sorry, I should have asked this before, are you browsing the image using the Windows PE rescue environment supplied with Macrium Reflect or are you using Bart PE?
Does the same error occur if you use the boot menu option? ('Other Tasks' > Add Recovery Boot Menu'.)
This is likely to be a memory problem with your PC. Windows PE may allocate different kernel memory to your Windows OS and you have proved that your images are OK by verifying and mounting them in Windows. To confirm this can you boot a different PC with Windows PE and mount the same images?
Update: Now I could try the boot CD on another PC but result ist still the same. I tried to mount different images but always the same error appears. So I think there's no problem with my hardware.
It's not an issue that we can reproduce so it looks like a problem with the Windows PE component. Can you uninstall the Reflect Windows PE component from the control panel then re-install.
If that doesn't help then can you send your system information file to support (@) macrium .com. ('All Programs' > 'Accessories' > 'System Tools' > 'System Information') and take the 'File' > 'Save' menu option. Save the '.nfo' file and attach it to your email.