Hi Topbuild,
It looks like you're experiencing the Microsoft.Office.Interop.Excel._Application error. Generally this error means that when a program such as AccountRight asks which version of Excel is installed, the wrong version is being reported back, causing a communication problem and errors between the programs.
This can happen when different versions of Office/Excel may have been previously installed on the computer, and components/values are left behind. This type of error can be fixed by one one of the following:
Please do let us know how you go.
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