The following error appears while installing an Online Store package on Windows host:
Parallels Business Automation Online Store -- Error 1720.
There is a problem with this Windows Installer package.
A script required for this install to complete could not be run. Contact your support personnel or package vendor.
Custom action SetupIISAction script error -2146828212, Microsoft VBScript runtime error: Path not found Line 408, Column 4
The 'templates_c' folder is present in PBA Online Store installation folder.
Drop all empty folders from the Online Store installation folder.