Netbeans creates a file and then complains that it already exists

Question

I am trying to create a new C ++ class in Netbeans by right-clicking on the "Source Files" virtual folder inside Netbeans and clicking on "New C ++ Class".

I call the source file test.cpp and the header file test.hpp. When I click end, Netbeans complains that test.hpp already exists.

I go to / home // NetBeansProjects /, and I see that Netbeans created the test.hpp file. I delete it, try to create a new class again, and the same error occurs. Netbeans created the file again. (The file does not appear in Netbeans, only in the file browser.

I am using a Linux Ubuntu based distribution. Netbeans v7.3.1.

EDIT: This happens with all file types. (Source, header, class, source C, class C ...)