Error importing channels from export.xml

[robyf]

TV-Server Version: TVEngine3 Snapshot: 08-18-2007 01-23h Revision 15586
MediaPortal Version: MediaPortal SVN-Snapshot: 08-18-2007 01-01h - Revision:15586
MediaPortal Skin:
Windows Version: Windows XP SP2
CPU Type: Ahtlon XP 2500
HDD: 500GB Seagate
Memory: 1024MB
Motherboard: ASUS
Motherboard Chipset: NVIDIA NForce
Video Card: ATI 9600
Video Card Driver: Catalyst 7.6
Sound Card: Integrated
1. TV Card: FireDTV-S
1. TV Card Type: DVB-S
1. TV Card Driver: FireDTV BDA Setup 3.1 Light
MPEG2 Video Codec: fddshow
MPEG2 Audio Codec: fddshow
Satelite/CableTV Provider: Sky Italia / Hotbird + Astra (dual feed)
Remote: Fire DTV
TV - HTPC Connection: VGA

I made an export of my channel list with tvengine TVEngine3 Snapshot: 08-14-2007 01-23h Revision 15517 and try to import it in the version above. I get the following error (italian):

Error while importing:
System.NullReferenceException: Riferimento ad un oggetto non impostato su un'istanza di oggetto in SetupTV.Sections.TvChannels.mpButtonImport_Click(O bject Sender, EventArgs e) in SetupTV.Sections.TvChannels.mpButtonImport_click(O bject Sender, EventArgs e)