If you're running Windows 10, you might have some issues with installing PDF2XL. You may encounter an error during the install stating that the installation "ended prematurely".

This is due to a security permissions issue in Windows 10 (specific to OneDrive) and, regrettably, is not something we have control over. 

Microsoft does have a solution for this problem here:
http://answers.microsoft.com/en-us/windows/forum/windows_10-security/bug-windows-10-onedrive-default-settings-causing/43700b79-31a3-43c8-8d30-7863e40d9576

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