When i click the "Apply Changes" button it returns an error message: "Critical Error: Script called without the required parameter(s). (user345341)", and refuse to move several of my pictures.
If you want a picture of this error screen i can upload to you.
Please take care about this.

The script retrieves values from all the fields that should exist on the page.  For some reason, the "user3" field (Wattage) did not exist for Picture 45341 (The lighting of Horev center of Haifa).  All input fields should always be present on the page, even if they are left blank.  This error could occur if the page never fully loaded.  When you submit the form, use the Apply Modifications button at the bottom of the page rather than the Enter key.  The Enter key will function even if the page has not completely loaded, but the Apply Modifications won't be there if the page is incomplete.  Let me know if the error happens again and whether or not any fields (e.g., Model Number, Wattage, Lamp Type, etc.) appeared to be missing from the page.

You means to the pressing of the Enter key that move me to the next page i uploaded if the cursor isn't inside the description box?

Just make sure the entire page has loaded including the Apply modifications button at the bottom before you submit the form.  If an error occurs anyway or the page won't load completely, let me know.