File format or File Extension is not Valid While the “file format or file extension is not valid” error is typical, some users have also reported the error “QuantumXLAddIn.xlam is not a valid add-in” which has the same root cause and workaround. Root Cause – Windows Defender security setting and misleading error reporting When Attack Surface […]
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First, select “File” from the main menu. The select “Account” from the left menu. The Excel version is displayed in the section called “About Excel”. In the example below the version is 2008.
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How to launch Quantum XL, SPC XL, DOE Pro XL, or Snapsheets XL This support article explains how to start an Add-In independently from Excel. If you would like Quantum XL or SPC XL to start each time Excel starts, then please see these articles. – Auto-start Quantum XL– Auto-start SPC XL Instructions for Quantum
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A commonly asked question is “Where do I find my serial number”? Your serial number (also called a CD Key) is very important. We, like most software companies, keep track of legal users by using this key. Method #1: If you still have the software installed, select “About” from the product’s menu. The serial number
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