Does anyone run the IB API on 64-bit? I got my computer last week and have been spending days trying to get the same programs to work on my new computer that were on my old 32-bit computer. With IB's own sample application, I get the error: "An error occurred creating the form. See Exception.InnerException for details. The error is: Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))" just trying to run the application - this happens at the line "Friend Class dlgMainWnd" On my own program at the line "Tws1 = New AxTWSLib.AxTws" when I look at the AccessibilityObject Property for Tws1 it shows "Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))" Normally I would have thought those errors would come from missing references, but that wouldn't be the case with the Sample Application that IB provides. IB said that they have had troubles with people running 64-bit, but that this would fix: 1) uninstall TWS, Java and the API Components 2) installing Java 32 bit & reinstall TWS 3) install the API Components 4) Log back into TWS and try to run the Sample VB.net Application. Well that didn't work for me and now nobody has any idea what to do. If anyone has any idea as to what could cause this or had this happen, your insight would be much appreciated. Thanks.