APP crash, iexplore.exe

Hello,
Two days ago I downloaded an ActiveX add-on to play a particular game online. Yesterday, when I tried to access the internet, even though my connection is good, I got the message "Internet is not responding" and the only way I can access is to go through the Add-on directory and click the "How do I delete ActiveX addion", "Click internet explorer: I still get the "Internet is not responding" when I try to close out and it's a royal pain because it continues to pop up even when I have clicked the "Close program" button. I can't find the ActiveX add-on in the Manage Add-ons so I don't know where it is. I did find the APP crash, iexplore.exe
Problem Event Name: APPCRASH
Application Name: iexplore.exe
Application Version: 8.0.6001.18813
Application Timestamp: 4a6621ae
Fault Module Name: StackHash_a615
Fault Module Version: 6.0.6001.18000
Fault Module Timestamp: 4791a7a6
Exception Code: c0000374
Exception Offset: 000b015d
OS Version: 6.0.6001.2.1.0.768.2
Locale ID: 1033
Additional Information 1: a615
Additional Information 2: 1cd9bf0a71ad5ffdc243421c221689df
Additional Information 3: 584c
Additional Information 4: aa92ac964e2bf50a96826326597649bb
I don't know what to do. Can anyone help?