Dear Luc san,
Please update software to Ver 1.00.07 follow step.
1.Save "MOBILE LABEL PRINTING.ex_" file from email to your pc and rename file to "MOBILE LABEL PRINTING.exe".
2.Connect HT to PC by using "Windows Mobile Device Center" software.
3.Copy "MOBILE LABEL PRINTING.exe" file from your pc to "Program FilesMobile Label Printing System"
4. Confirm replacing file.
Cause of this matter is endcoding data on master(.txt) file from customer,
Remark :
The "Mobile Label Printing System.CAB" please save this file on your pc for install when software of customer lost.