"String missing" error on the signature capture window

The "String Missing" error occurs when the signature capture component has a problem loading localized strings.

The strings should be in 'MUI' files in language specific sub-folders of \Program Files\Common Files\WacomGSS (or \Program Files (x86)\Common Files\WacomGSS on Win64).

An uninstall/reinstall of the product (SignPro and/or Signature SDK) should fix the problem.

To be on the safe side, after uninstalling the product(s), check that the "...\Common Files\WacomGSS" folder and all subfolders have been removed.