Same issue here. SP 2007 import spreadsheet function fails. My error sequence is a bit different though:

1) MS VB Error: system Error &H80004005(-2147467259) unspecified error
2) MS VB Error: out of memory
3) MS VB Error: this command will stop the debugger
4) MS IE Error: an unexpected error has occured. (-2147352567)

#2 seems weird to me as I have 2GB of RAM and have never experienced this before so I'm wondering why this error would appear trying to import a 200KB spreadsheet. Does anyone know what's going on here?

Thanks,

J