My timer macro reads valus from a workbook on one instance of excel and
updates another workbook in another instance of excel.
Sometimes data is large so i turn off screen updating on the recieveing
workbook.
When the user opens a dialogbox in one excel and the macro is running, I get
a ScreenUpdating failed error.
This also happens when the user is editing a cell and the macro runs.

Is there anyway i can detect an open dialogbox ??