Error while navigating IE

[Trailokya_NathB]

Hi,   I am getting the below error in navigation stage.We have to open around 600 websites and extract a code from all.After processing 100 around websites, all other website navigation gave the below error.All the retrieved code from website, we are storing one by one in excel to prepare a report.Any idea what could be the reason for this error and how to solve it ? Old format or invalid type library. (Exception from HRESULT: 0x80028019 (TYPE_E_UNSUPFORMAT))   Thanks for help!

[NarayanShrawagi]

It looks like this is an error that comes from an old format or invalid type library, could be an *interop*.dll.By downloading new version of the .dll's should be solved.