Q. Error message that includes the clause "opening file DATA\WI " or "opening file DATA\WA ".

A. REASON:- Damaged files cause by improper shutdown.

SOLUTIONS: Delete all the files with that name and any extension in the DATA folder of EasyEst usually under C:\EST93 Estimator will automatically regenerate those files. For instance, if the error indicating "DATA\WI", you would need to delete WI.DBF, WI.CDX and WI.FPT from the "DATA" subdirectory/folder.