SYMPTOM:
Any hyperlinks defined in a Report Service Document, either in text box properties or through the Attribute definition, when exported to PDF the following error message is seen:
Cannot find 'file://mailto:xxx@xxx.com/". Make sure the path or Internet address is correct


CAUSE:
This is a known issue in Strategy Analytics Enterprise 9.4.1 Hotfix 1 and earlier versions.
ACTION:
This issue has been addressed in Strategy Analytics Enterprise 9.4.1 Hotfix 2. Upgrade to this version to take advantage of the fix.