Error message in Developer 61

In my developer 6.1 , i always get the following error when ever i double click any package/folde/flow services .

Could not save parameters

[ITU.0001.0003] The system cannot find the specified file.

When i click OK button then every thing is working normal.
But i dont know why the above error is displayed.
plz do suggest in this regard. Also any links/ material to find the developer errors by the error number.