ALC-FUT-001-007: Syntax error in the regular expression *. from File Utilities - Find in ES2

Has anyone encountered the above error when trying to use the Foundation - File Utilities service Find?

This is occuring in ES2, and I have tried using an asterisk, as well as the exact file name I know exists.

I have tried literals in the Process Properties, as well as passing it in via string variables.

Any help is appreciated.

Thanks

Mark