Error processing command line

[Anthony]

A very novice user here, so sorry, if I miss something.
I have two initial issues, the first of the two only with the portable version (latter version 4.1c).
1) After running the register.bat in the integration folder, I saw the icons both in IE and Windows Explorer (WE). Using the latter WE icons, I cannot copy or link anything though. I got always the following message: "Error processing command-line. Error importing (here is the the path of UR file): file or URL not found. There are no icons moreover in the "sent to" right click menu.

2). I think that the way the items in the data panel (on the left) are re-arranged is not coherent. See the following example with these items.
+-Notes_1
...+-Notes_2..........Now if I move Notes_2 to the left, it does not
...+-Notes_3..........shift above Notes_4 as it should be, but it
+-Notes_4.......... goes at the very bottom of the tree, i.e.
(etc)....................under Notes_10 or whathever.
+-Notes_10

. Thank you for any help.