MC Visual C++ runtime library - Assertion failure - expression replaceVAR.vt == VTBSTR

[bignose2]

Hi,

one of my front ends has just started getting this error.
when I click on a button to open a form

no error or debug just as below, Abort just freezes have to do a full close X, Ignore just keeps flashing the same message.
Retry sometime continues on normally but no info.

this is in a accdb so able to go into VB.

Exactly the same front end on 2 different windows 10 PC (same state of upgrades) are fine?

Quite a lot of code on open & load so could start removing but just did not like this level error.
Not sure if the File :g:\vba ... is relevant as G is google drive on that PC?

Any ideas?

 

[bignose2]

After more debug F8 finially found the trigger, seemed not to flag up before but might have been me!

set regex =createobject(vbscript.regex)

fine on the other PCs so to investigate.

Is there something I can perhasp re-install or best to really try to find the reason.
been fine for years

 

[Gasman]

Another member has had a windows update which is causing a working system to crash.

VBA code crashes after installing KB5064081 update

Hello, After installing windows update KB5064081 on Windows 11 machine, the following piece of code crashes on Access 2016: Public Sub CreateTable(strPath As String) Dim cat As ADOX.Catalog Dim tbl As ADOX.Table Dim idx As ADOX.Index Dim flag As Boolean Set cat = New ADOX.Catalog cat.Create...

www.access-programmers.co.uk

Any Office updates as well?

 

[isladogs]

Hi @bignose2
This bug was first reported by Mike Wolfe on 29 Aug with details passed on to the Access team the same day

Bug Alert: Assertion Failed on RegExp Calls in Access 2508

Two separate sightings of the same error on two entirely different machines within hours of each other is likely no coincidence. I hope this doesn't ruin my long weekend...

nolongerset.com

I included it in my article summarizing all known bugs for July/August:

Bug Summary - July/Aug 2025

This summarises all known Access bugs and one Office bug reported in July / August 2025 together with symptoms and action taken.

www.isladogs.co.uk

There is a workaround described in both articles