ROES Installation Error 1001: Exception occurred while initializing the installation.

During installation on a Windows PC the error is shown when the install is at the “removing backup files” stage.

Error 1001: Exception occurred while initializing the installation.
System.Argument Exception: String cannot have a zero length..

The error is caused by files left over from a previous installation. These files are located in
C:\Users\AppData\Local\Temp

NOTE: AppData is a hidden folder

Three files can be present. RWSCleanup.dll, RWSCleanup.InstallState and RWSCleanup.txt.

Delete all three and then run the install again.

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