This Error Message Article explains the TEKLYNX CENTRAL error message “Operation error Error in the application” and details how to fix the underlying problem that caused it to appear.
TEKLYNX CENTRAL was unable to execute a command in the programming. This was seen when trying to ‘Check In’ a label template file into TC that was missing the .lab extension.
When prompted for filename when checking in the document, the filename must include.lab as file extension.
Related Articles: Print Manager (SENTINEL) Unable to Execute Print Jobs in the Label Manager (LABEL ARCHIVE) Without .lab Extension – KBA-01247-G9H2K4
Issue Found: Windows 2008R2, running TEKLYNX CENTRAL 4.0