This error indicates that Statistica is running out of hard disk space on the machine this error is seen on. Clear space on the drive where Statistica is configured to create temp files or
change the temp file directory to a drive that does have sufficient space (Refer to the article in the Reference article as required).
If you are encountering this error while accessing the application over Citrix, contact your Citrix Server administrator and have them clear space on the Citrix server or change the temp directory in Statistica as referenced.