The error:
Error #2130: Unable to flush sharedObject.
Could have a few cause, I doubt any of them are malicious, sounds to me like a problem with the ad itself. Poorly written flash code can cause this issue with a variable being set incorrectly, a malformed URL etc..
- Check your flash security settings, is this site allowed to store data locally?
- What version of flash are you using, is it a beta version or debug version? (list exact version)
- Does the problem go away if you uninstall flash and install the latest stable version?