This problem apear when I had created a lesson by uploading an IMS package to a folder when ims repository is activated. After the resource is created as a lesson in a course and tryed to open the lesson, a screen tell me that the packge is not deployed. But the asociated directory is created and the package is unzipped. The form points to type/ims/deploy.php script. OK. Than click Deploy button and the message is: "Sorry, the requested file could not be found". The lesson can not be used at all. Also I had deleted the lesson several times and reload the above process again. Same time did wrong. Also I deleted the coresponding directory: .....moodle\moodledata\28 And finally in edit lesson I did browse repository after I unzipped there the ims package that I was uploaded in ...\28 folder and there the package was vizible as folder. I entered in it and there the file imsmanifest.xml was marked as not deployed. I succesfuly deployed the package and voila also the lesson become usable. I think the ims deploy to folder is interfering somehow with ims deploy to ims repository. But that is only a raw assumption.