Your comments

I can't reproduce the issue.
Please provide more details, such as:
  • A crash report.
  • A screenshot.
  • Your OS version.
  • Your configuration of the tweaker.
  • Your configuration of the taskbar (Taskbar Properties).
It's not a bug, it's a feature request, and in my opinion it's not worth the effort.
Unfortunately, the crash report is not very helpful.
I tried to reproduce it locally, putting the system to sleep multiple times, but the tweaker doesn't crash on my PC.
Do you have a way to reproduce it?
Also, does it crash if you turn off the update checking feature?
Thanks for the dump, but unfortunately, it doesn't contain much useful information.
The crash happens in a callback. I assume it's caused by the update checker, but I can't tell for sure.
Do you have a way to reproduce the crash?

P.S. might be a duplicate of:
http://tweaker.userecho.com/topic/382920-after-wak...
Wouldn't it be more logical for Rainmeter to provide such functionality?
Anyway, what you want is the "Reserve empty space on taskbar" option, but with a customizable width?
Great :)
Also, one more hotkey Windows provides by default is Shift + Left click.
Works correctly for me on Windows 7 x64:
http://imgur.com/a/zShXk

Note that this option doesn't have effect on a vertical taskbar.