J2ME WTK Record Store deleted each time you run the application

Past days I experienced a weird problem building and running a midlet with Antenna inside Eclipse. Each time I built and run the application, the WTK "DefaultColorPhone" emulator I used had the RMS completely deleted. Everything was fine if I exited from the appliction and started again without any building.

The solution has been going to the Windows current user "Documents and Settings" folder and browse in "j2mewtk2.5.2appdbDefaultColorPhone". There I found a file in.use that was the lock for the existent RMS and that was the reason why the WTK generated a new clean RMS each time I built the application. Deleting it everything is ok again.