It's not a big deal but at the same time it should be a quick fix. I used the link to download the "ZohoAssistStartupScript.zip" from the GPO deployment page but the file is downloaded and saved as "ZohoAssistStartupScript_Support" without the .zip extension, so whatever application is registered to handle .zip files is not associated with it and causes the application selection window to open asking for the application that should be used to open the file.