Those memory addresses in error messages mean nothing to us.
We really need the call stack.
Hopefully you are seeing an error message similar to this:
If so, click where it says "Click here".
Then you'll see something like this:
Check the "Copy to Clipboard" box, then click OK, then paste the contents of your clipboard here in the forum.
Also, please let us know which Toad version you are on.
Thanks.