When trying to connect, Toad seems to hang with an hour glass, but in a new window that cannot be brought to the front titled "Error." is shown. The error cannot be closed. User is forced to End Task on the Toad for Oracle application to close everything.
Looking at the Toad.ELF file, the error indicated the following:
Access violation at address 715A2F5C in module 'AcLayers.DLL'.
SEE SCREEN SHOT - Error Screen Shots.doc
Windows compatibility mode was set for Windows 95 on Toad.exe
Note: Make sure Toad is closed before following the steps below.
1. Right Click on Toad for Oracle shortcut on the Desktop.
2. Click on Properties.
3. Click on the Compatibility tab.
4. Under Compatibility mode section, uncheck the "Run this program in compatibility mode for:" box.
5. Click on Apply and OK buttons and then try connecting to Toad.