Coherence mode no longer available since upgrade to OSX 10.8.4 (12E55)

M

mwille64

Member
Getting this message since the upgrade: "Unable to switch to Coherence. The virtual machine display configuration could not be applied. Please try again or contact the Parallels support team for assistance."

I'm running a Windows 7 Ultimate 64bit VM.

The problem appears only if multiple monitors are connected (not mirrored). This was however working before the OSX update.
 
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I can further narrow down the problem: the error message only comes up when connecting 2 monitors. Connecting one monitor is fine, as soon as I connect the second monitor the VM jumps out of coherence mode with the said error message.

Again, this was working fine until recently.
 
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