The error message is quite obvious:
CS0246: The type or namespace name 'GsmComm' could not be found (are you missing a using directive or an assembly reference?). I suppose, the simplest way is to add assambly reference:
http://support.discountasp.net/KB/a97/how-do-i-add-an-assembly-reference-in-the-webconfig-file.aspx[
^].
But first of all, be sure to check:
- is it really installed, can you see it in the GAC of the host?
- can it be used outside GAC, if so, is it in the right place?
- is the reference ok (version, culture, strong name...)?
- is the platform (x86, x64, anycpu) ok?