GetEnumerator error when it reachs 64º excel file

Hi,



I'm trying to load multiple excel files and multiple sheets.

I did it, but when it reachs 64º file, i got this error:

Error: 0xC0014023 at Foreach Loop Container: The GetEnumerator method of the ForEach Enumerator has failed with error 0x80004005 "Unspecified Error". This occurs when the ForEach Enumerator cannot enumerate.

Until 64º file, all works fine.

I'm using Windows 7 64-bit for developing and Windows Server 2008 + SQL Server 2008 64-bits as server, my solution is defined to run in x86.

My excel connections are dynamics, I read Excel files from path and then sheets with nested "Foreach Loop".

Thank you for any help.