# VS Action can hang

**URL:** https://www.finalbuilder.com/forums/t/vs-action-can-hang/625
**Category:** Discussion
**Created:** [October 24, 2007, 2:55am UTC](https://www.finalbuilder.com/forums/t/vs-action-can-hang/625 "2007-10-24T02:55:13Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![jeremyk](https://www.finalbuilder.com/forums/letter_avatar_proxy/v4/letter/j/ee7513/32.png) [@jeremyk](https://www.finalbuilder.com/forums/u/jeremyk)
#### Post date: [October 24, 2007, 2:55am UTC](https://www.finalbuilder.com/forums/t/vs-action-can-hang/625/1 "2007-10-24T02:55:13Z")

</div>

I have&nbsp; a VS2003 application that I've been building happily with FB but for some reason (yet to be identified), I am now getting lots of Compiler Error CS0234 - **The type or namespace name '_name_' does not exist in the class or namespace '_scope_' (are you missing an assembly reference?)** errors (for things like Windows, Helpers, Notify etc..).

If I change the 'Configuration' from the one I want then it will compile, but the one I do want does compile withing the IDE itself.

I then wondered what difference 'Use environment variable for C++ paths' would make (thinking maybe I was missing a path or something somewhere), so ticked it, and the action hangs becasue it give a list of the command line switches because 'useenv' in an unknown switch.

Not a huge issue as you can stop it, but thought I'd mention it. Mind you, any help on the initial compiler error would be welcomed...&nbsp;