Conversion 8.0 to 8.03, Error 91

I was in the final processes of converting a database from Vantage 8.0
to Vantage 8.03. The Database Conversion Process was at the
point "Build Shop Load File". Then I get the error "No resource-0
record is available.(91)". Has anyone encountered this error? If so,
do you know what the problem is?