SA-21390

Summary

When attempting to use the Create Merge Document feature from a machine where the Windows username contains non-ascii characters, a blank document is generated and errors are displayed.

Error Messages

1. SilverLight Control ERROR in 'ProcessHttpResponse': Failed to download rule. Waitcode: WORD_TEMPLATE_DOWNLOAD
2. SilverLight Control ERROR in 'LaunchWordFinally': 

Steps to Reproduce

1. Go to Designer studio. 
2. Open Case management gallery (via "Designer Studio / Process and Rules / Case Management / Gallery"). 
3. Launch "Create word document". 
4. Click "Preview" button. 
5. Click "Create Merge Document". 

Observe exception

Root Cause

A defect in Pegasystems’ code or rules:
Microsoft Templates registry key isn't being retrieved correctly when the registry value contains non-ASCII characters using RegRead function of WScript.shell.
For Unicode alternatives we need to use are RegOpenKeyEx, RegQueryValueEx and RegCloseKey functions from advapi32.dll.

Resolution

Apply HFix-25208