Chemdraw 13 excel plugin - SMILES to Molecule error

I have office 2013 and 2010 installed and the chemdraw plugin (chemdraw 13) works for both of them.

A week or two ago (on two seperate computers with the same setup), the excel plugin "convert SMILES to Molecule" function stopped working. As far as I know, no changes were made except windows updates.

Basically, it tries to convert and kinda hangs on the "working" loading window for about a minute. Eventually, the loading window closes itself and no changes are made and there is no error message.

If I look at the windows event viewer, I can see it logs the following error:

Procedure: CommandHandler::Execute

Details: The file exists.

StackTrace: at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)

at System.IO.__Error.WinIOError()

at System.IO.Path.GetTempFileName()

at CambridgeSoft.ChemOffice.ChemDrawExcelAddIn.CommandHandlers.CommandHandler.AddPicture(Worksheet worksheet, Byte[] cdxData, Range cell, String alttext)

at CambridgeSoft.ChemOffice.ChemDrawExcelAddIn.CommandHandlers.CommandHandler.<>c__DisplayClass11.b__f(Range cell, Int32 loopIndex)

at CambridgeSoft.ChemOffice.ChemDrawExcelAddIn.MethodExtensions.ForEach(Range selection, Func`3 action, Boolean ignoreHidden, Boolean limitAreaToUsedRange, Func`2 breakCondition)

at CambridgeSoft.ChemOffice.ChemDrawExcelAddIn.CommandHandlers.CommandHandler.ConvertToMolecule(ConvertFrom convertFrom, Boolean showUI)

at CambridgeSoft.ChemOffice.ChemDrawExcelAddIn.CommandHandlers.CommandHandler.SMILESToMolecule()

Does anyone know how to solve this?