Hi John,
We also got your support request from www.dasylab.com, and I left you a voicemail and sent an email this morning.
There is a long standing problem where certain locations on the workarea will be marked as used, even if there is nothing in that location. We typically see the problem in a worksheet that has been worked on in multiple versions of the software, or has been edited heavily, especially moving modules and wires, over a period of time.
If you will send me the worksheet(s) with the problem, I can look at them, and possibly repair them.
- cj