The error message is incorrect. It should say “libLua.dll”. You can find this file under workspace\bindings\libLua. You say that it cannot find that file sometimes. Does that mean there is times when the App starts without this error message? Have you created a new workspace? There used to be a bug where libLua.dll was not copied into the new workspace folder.
There are a number of instructional videos on
http://www.youtube.com/user/OpenCLStudio, which should give you a fairly good overview on how to use the editor. This section will continue to grow over the next few weeks.
In the current version of OpenCL Studio you cannot import your existing .cl files. At this point, you still have to create a Program node under the treeview and then copy you code into the editor of the “Code” tab. A later version of OpenCL Studio will allow you to reference your own cl files simply by dragging and dropping them into the IDE...