Issue
When a UNC is rebooted, the startup fails with the following error being displayed in the Standard Output Window.
"FATAL: Cannot boot station from sns
java.util.zip.ZipException"
Environment
I/A Series (Niagara) R2 UNC (UNC-510, UNC-410, UNC-520)
Cause
Backup service filled the memory in the device. This causes the automatic periodic backup of the RuntimeDB to improperly create its backup of the running station. When the UNC is rebooted, the system discovers that its station config.sns file is corrupted. When the operating system finds that the config.sys station file is corrupted, it looks for any station backup zip files. The most current zip file is then unzipped. During the unzip process, the program determines that there is not enough memory to unzip the backup. This causes the startup to fail with the ZipException error.
Resolution
Reload the latest good backup of the station using the Admin Tool then edit the station to remove the Backup Service. Reloading the station using the Admin Tool Install Station function will cause the memory in the UNC to be cleared before the station is loaded.