I closed the IDE yesterday as normal open it up this morning and lo and behold no code completion. Can't see why as tools/setting/Code Completion is enabled.

Anyone advise me how I can troubleshoot this?

Is your project selected as "active" in your workspace?

One possibility is that the project has corrupted meta data relating to your source files. You can first try right-clicking in the Code Explorer and doing a Refresh. If that does not work, you can exit PhpED and delete the project PPX and PPD files, which will be automatically re-created. I have seen corrupt PPD files cause problems, but that was a long time ago on an older version of PhpED. The DSK file contains breakpoints and other debug information, so you shouldn't need to delete that one.

Sorry for the delay in getting back on this. I posted the question a short while before I went on leave. I get back and start up and every ting is back to normal. So I have no idea what was happening.

Thanks for the help though.