Hi there!

I got a really strange problem when trying to disable some tabsheets. Well I got a PageControl - say PC1 - placed on a Tabsheet of another
PageControl - say PC2 - and want to set some Tabsheets of PC1 invisible with the "TabVisible" property.
Of course this works fine in all of my other projects but in this project i always got a "List Index out of bounds (5)" error?! Well I debugged the
project and found out that this error occurs exactly when I try to set TabVisible = false.
So I tried some workaround and found out that I've to set the Tabsheet - where PC1 is placed on - visible and then it works but it's not possible
to set all Tabsheets visible on AppActivate because then I also got that error! Maybe you can tell me the reason why this doesn't work and how
to resolve it? I can't understand why this error does only occur in this project and not in all others?!

thx for your help

best regards