I'm assuming that this is something to do with wxMSW 2.8.7. I have compiled as said and entered it in to the Global Variables.
What is the value you entered in for wx as the Global Variable.
Mine is F:\SourceCode\Libraries\wxWidgets\wxMSW-2.8.7
This folder contains an sub-directory called lib and under that is a folder called gcc_dll.
Inside the folder gcc_dll is a file named libwxmsw28u.a and an DLL to go with it.
Do you see the file named libwxmsw28u.a?
Note, please use the correct forum for future questions, These forums are for people developing Code::Blocks NOT people using Code::Blocks to develop other software.
For Code::Blocks installing issues I suggest the normal "Help" forum
http://forums.codeblocks.org/index.php/board,1.0.htmlTim S