SYMPTOM:
When attempting to access the Main page in Strategy Web 10.0 and 10.1, users receive the error shown below:

Sample code/error: The Web Server encountered an unknown runtime error. Invalid object ID

AES tunneling was deprecated, and no longer works, but the option remains available in the Admin page.
ACTION:
Disable AES tunneling or switch to using SSL encryption. This issue has been addressed in Strategy Web 10.2. Upgrade to this version to take advantage of this fix, where the option for AES tunneling has been removed.
This issue has been logged as Rally ID: DE67226 and KB11324