Issue
When running Sigma 4.05 with a backup from a previous release of Sigma, the DeviceCnf.rec file is being over-written with a default DeviceCnf.rec file
Environment
Sigma 4.05
Cause
The DeviceCnf.rec and gencnf.rec files use a different format in Sigma 4.05 than previous releases.
Resolution
When Sigma 4.05 checks these files and finds there not correctly formatted it automatically replaces the DeviceCnf.rec file with a default or blank file.
Use the file C:\sigma\bin\SigUpgrade.exe to upgrade your data files to the correct formatting for Sigma version 4.05.