There is a new firmware v2.5 for the Logic Sniffer with an important bug fix. Please upgrade your Logic Sniffer right away.
We noticed a bug in the OLS firmware where the PIC and FPGA could both try to control the ROM CS pin at the same time during the self-test. Firmware v2.5+ fixes this issue.
Get a Logic Sniffer for $50, with free worldwide shipping.