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Serial Communication failed at port

1. I have a project done at other PC . I imported it in my CCS6 ( Version: 6.1.1.00022  ).

2. I have Tiva4c launchpad modified to be an in-system programer for a board with a target being : Stellaris LM4F230H5QR

3. The Tiva Launchpad is recognized in windows on COM11

If I try to debug the project on my PC, CCS drops an error : 

Can't Initialize Target CPU:
**Error**: Serial Communication failed at port: COM14, baud rate:9600!

Apparently it thinks that the launchpad is at COM14, but it's not the case. I can't verify it now, but probably that's the port at which the Launchpad worked on the original PC it was developed on.

If I open another project developed on my PC, it can be programmed in to the target board, and in this case the CCS recognizes the Launchpad at the correct port.

Thanks

Is it a possibility to manually change the port in CCS ?

My windows is Windows7 Pro SP1 64bit.