IMO, the project templates haven't been found. I do not have Windows, but in Debian, it is the /usr/share/codeblocks/templates directory.
(1) You should have something like "codeblocks\templates" on your disk. Do you have such dir?
(2) If yes, then can you access the dir?
(3) What's the contents of the dir? It should contain bags of files: *.cbp files (templates for Code Block Project files), headers, source files (default code generated for the projects) and other files.
If you cannot find the dir, try searching for *.cbp files. There should be a directory on your disk containing many such files. Because you have just installed, it must be the dir with templates. If you find no such dir then
(4) Can you extract files/directories from your installation package?
(5) If yes, then search the package for the templates and extract the whole dir to its proper place in the application file tree.