A white vertical line in the middle of screen!

What steps will reproduce the problem?
1. install ulipad.4.1.py27.exe in Windows 7 Home Base SP1
2. run the ulipad.exe
3. notice that in the middle of the IDE screen, there is a WHITE VERTICAL line 
with about one pixel wide, and I can't(or don't know how to) remove it by any 
configuration!

What is the expected output? What do you see instead?
Described above

What version of the product are you using? On what operating system?
Described above

Please provide any additional information below.
If more infomation is needed, feel free to contact me by emailing 
ethan_new@163.com

Original issue reported on code.google.com by ethan_...@163.com on 2 Nov 2012 at 3:07

Attachments:

screenshot_white_line.png

google-code-export / ulipad

A white vertical line in the middle of screen! #304