Toad World® Forums


I just upgraded from 5.0 to 5.1 and now whenever I try to open a workbook, Toad crashes. Details below:

“Toad Shutdown

Toad encountered a serious error and must close.

Please save your data and close the application.

We apologize for the inconvenience.

Binary stream ‘0’ does not contain a valid BinaryHeader. Possible causes are invalid stream or object version change between serialization and deserialization.”

Any help would be highly appreciated!

Thank you!

This is a really uncommon issue. You can try to remove your application data folder which we are using for storing setting information for Toad.
C:\Users****\AppData\Roaming\Quest Software\Toad Data Point 5.1

Try to remove it and start TDP again.
If you still have an issue please go to this AppData location again and try to send us file 'ExceptionTrace.log'

1 Like

Thanks for the tip, Filip. I am a little confused about the implementation. What do you mean when you say "remove" the application data folder? Where should I move it to? Should I delete it? Cut and paste it to another location?

Thank you for your help!

Hi Filip. I wasn't able to resolve this issue earlier. Just today I updated again to the most recent version of Toad (5.1.2), and I still have this serialization exception error. It is preventing me from opening up a previous workbook project of mine which I need to consult. Do you know what could be causing this or how I can fix it?

Thank you!

Hi, were you able to find AppData directory as I mentioned? This folder is only for custom/temporary data. We are storing there your settings, connections or logs. So if you will remove this folder you won't lost any data or some of your toad files.
You can remove or rename it. Toad will create new folder on start.
If you have some issue with WB. Can you tell me little bit more? What exactly issue do you have? Does it load WB file? Are you storing data with it?