[Elecraft] Major Problem ?

[Leo Starrenburg PA5LS]

This morning I finished and installed the KDSP2 option for my K2. The KDSP2
worked fine, that is it passed all the tests as described in the manual.

After that I hooked the K2 up to my KPA100/KAT100 in the separate EC2, and
since then I have little to no reception and am not able to send, both at
low or high power. This setup has worked fine for months, so what could have
gone wrong with the KDSP2 installation ?

Also: is there a quick way to return al the KDSP settings to default value ?

73' Leo PA5LS.