This technote explains how to resolve the error "An attempt was made to access an unnamed file past its end". This can occur when opening a schema using IBM Rational ClearQuest Designer.
You open a checked-out schema in ClearQuest Designer. This error occurs:
An attempt was made to access an unnamed file past its end
The schema version might be corrupted.
Resolving the problem
To workaround this issue, try undoing the schema checkout in ClearQuest Designer.
If that fails, use the command utility: installutil uncheckout
Usage: installutil uncheckout
dbset_name (use "" for default)
If this problem occurs connecting from other hosts, or if other versions of the schema cannot be opened, or if other schemas in the repository cannot be opened, then there is likely schema corruption and you will have to restore from backup to resolve this.