FS crash after installing PMDG 800/900 with keymapping

While using the 600 and 700 NG version I started using keymapping for the functions of the EFIS and MCP using a few Goflight GP48 modules. After adjusting the keyboard assignment for PMDG and configuring buttons via FSUIPC (registered and latest version) all worked well. Within the Goflight GFConfig module these rotary knobs are not assigned.Now after having installed the 800/900 series with some alterations in key assignments while slow or fast rotations of the rotary knobs of the GP48 modules everything went black with the final remark that FS has encountered a problem.Is there somebody else having the same problems or is there anybody who can advice some alterations to get rid of this anoying thing.It worked all well before the update to the 800/900 due to a change of key assignements by PMDG some funtionkeys had changed, is this maybe the reason for this problem. I checked there is no double key combination used.Any help is higly appreciated, because it is great fun flying this model.:-halo