anneetien

When I try to open the VM manager I get en error. Here is the stack: ``` ByteString(Object)>>errorSubscriptBounds: ByteString(Object)>>at: ByteString>>at: ByteString(SequenceableCollection)>>replaceFrom:to:with:startingAt: ByteString(String)>>replaceFrom:to:with:startingAt: ByteString>>replaceFrom:to:with:startingAt: ByteString(SequenceableCollection)>>copyFrom:to: ByteString(SequenceableCollection)>>last: PhLVirtualMachine>>is64bit PhLVirtualMachine>>> [ :vm1 :vm2...

**Bug description** Duplicate class opens a debugger while the new class is browsed **To Reproduce** Steps to reproduce the behavior: 1. Open a new P13 image 2. Open a System...