This Is Not A Valid Staad Command File ~upd~ -

. If the first line is blank or contains a comment (like an asterisk ) before the header, it may trigger this error. Corrupt Input

: Check the project folder for files with .sbk or .ed.backup extensions. For .ed.backup , simply change the extension to .std . This Is Not A Valid Staad Command File

Some versions have . This strips non-standard characters. This Is Not A Valid Staad Command File