I occasionally get errors where the cursor won't switch into/out of edit mode and basically the keyboard input is lost, but closing the patch and reopening it seems to solve this.. (if anyone knows why this happens or how to avoid?).
I am not sure why, but I get this 'error' sometimes too. It seems to be related to the DSP, since it only seem to occur when DSP is on and a sub patch is set to edit mode with ctrl+e. A solution is to close the subpatch, turn off DSP and reopen the sub patch. (No need to close the main patch).
HTH
Soeren