EDIT - I have tried this a bit more and it is mainly FLV files that it comes up with this message. I have checked I they are enabled.
I've just tried adding an mp3 file to the Features Demo course on the QA Testing site and had no problem at all. Are you using the latest Moodle 2.0 preview 4 for testing? (I came across a couple of invalid JSON issues - MDL-19272 and MDL-23153 but they have both been fixed.)
Hello,
I've just set up Moodle 2.1+ (Build: 20110713) which is running alongside with Moodle 1.9.10 in a VM.
1.9.10 works fine but with 2.1 I get the same JSON errors when trying to upload files with the filepicker.
The error occurs with Opera 11.50 build 1074 and IE 9.
No problems with IE6, Chrome 11 & FF 3.6. Didn't try more
I don't know whether it's a bug on the browser's side or if it's still same Moodle bug.
According to the bug tracker all the opened issues mentioning this have been fixed.
Anyone else still having the problem and maybe knows a solution?
Thank you & kind regards
i have the same problem, did you find a solution?
Presumably it was closed as a duplicate because this issue has already been reported.
no it was closed bescause it report an error from the server but i think this is wrong.
Maybe this can be related: