Pastel Express v11 Outlook integration not recognising MS Outlook 2021 LTSC

SOLVED

Hi all

I'm an amateur who gives things a go. All was well 'til I upgraded MSO 2010 32-bit to said MSO 2021 64-bit because a single client had upgraded their XLSX mail merges and MS Excel 2010 32-bit couldn't open that file format anymore.

Apart from a now resolved issue with Google not allowing a third-party app to send mail via a third-party mail server, I have a Pastel Express v11 installation on a Windows 10 64-bit machine that does not recognise MS Outlook 2021 LTSC 64-bit. From Utilities..Microsoft Outlook Integration, I get a Microsoft Outlook not found error dialogue, and Customer Statement prints to PDF and send by email results in nothing appearing on screen in PAstel or in Outlook after Pastel has gone through the motions. Please help.

Thanks very much

Theo