I am unable to successfully call any Excel Step method. The error I am receiving is: File does not have correct content type (not a '.xls' file?): application/octet-stream
What I don't understand is why my excel file (.xls) is not being recognized as a .xls file. After I execute the test, the invoke statement is successful. The xls file gets copied to the results dir and can be opened from the generated report. Any one else ever have this issue? I'm using WebTest 2.6
