Basic PAYE Tools problem after updating to latest version

After updating Basic PAYE Tools as per system prompt the tools now fails to open stating The application encountered an error in the startup process. This error occurs after the messages 1. Updating database 2. Checking for Updates 3. Starting application I've tried downloading the latest Basic PAYE Tools again from HMRC site and installing it but still get the same error. I've tried starting in normal and assistive modes but both give the same error.

Hi Martin,
We are aware that some employers are experiencing problems with Basic PAYE Tools (BPT) when downloading and using the 2025-26 tax year release.  
We are working to fix this issue as soon as possible and a new version of BPT will be available shortly. 
We are aiming to have a fix available by Friday 4 April 2025. 
If you still require help or require assistance in calculating what to dedudct from your employees gross pay please contact us on 0300 200 3200.
Thank you.

I have had exactly the same problem. The only potential issue I can see is that my MacBook is now using the MacOS Sequoia not Sonoma - could this be the problem? Will the update today fix this please? I am unable to send in my EPS and Final FPS!

I accessed BPT from my home page icon as usual on Wednesday - prompted to update for new 2025-2026 tax year - start bar appeared but no download progress so after approx. 10 minutes I restarted my computer. Went to home page to re-open BPT & the icon had disappeared - checked C drive & nothing there either. Rang helpline who advised that they were receiving similar calls & a new updated version would be available today (Friday) - we were advised to download new version & when our employer details are input the new version should re-populate it - fingers crossed & we'll give it a try - big problem for us as wages were due Wednesday.....

Hi Sharon Brooks,
Please contact our online services team for advice.
Technical support with HMRC online services
Thank you.