Hi pgo,
I have the same issue, "Failed to connect to target. Reason: General Fail (for compatibility)".
I updated the firmware to V4.12.1, the same as my software.
I checked that the tool is listed as USBDM BDM Interface under Debugging Interface in device manager, and detected as USBDM-JS-0001 in programmer.
I am using HCS12 standalone programmer and target device is MC9S12D64 which is totally OK when used with P&E multilink.
Any advice?
Edwin