Error message: "Unexpected exception applying installer: Invalid length for a Base-64 char array" (4345502)

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Title

Error message: "Unexpected exception applying installer: Invalid length for a Base-64 char array"
Description

Error message when appying hotfix:

"Performing a normal install from Hotfix_hotfixid.zip"

"Unexpected exception applying installer: Invalid length for a Base-64 char array."

"Hotfix_hotfixid failed to successfully apply to the system"

"Adding record to Admin Activity Log..."
Cause

This error means the "Options" from the Patch description were not entered correctly into TPAM when installing the patch.
Resolution

If the option is /genkey ensure it is entered correctly i.e. /genkey and not \genkey. Ensure there are no leading or trailing spaces.

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