Software manager do not continue to display information on clicking "knocker" software.

[Sencer HAMARAT]

Linux Mint 13 Maya KDE 64-bit

I need to install a port scanner program to my desktop. I search for it with "port scanner" phrases. In search results "knocker" displayed in fist place and I clicked it to reach "install" button. When I clicked to knocker to get information page it stuck on at where it is. Mouse cursor turned into wait cursor and nothing happened. While It stuck on, I logged in to a console after ~20sec. and installed that application with apt. After I take a screen shot I closed "software manager" by window decorators close button.

Screen shot taken during software manager get stuck on. File is attached.

This can be reproducible bug. After all I tried to search and click again "knocker" and it's stuck again.

Here is the console output:

sencer@sencer-GA-990XA-UD3 ~ $ mintinstall
/usr/lib/linuxmint/mintInstall/mintinstall.py:254: SyntaxWarning: import * only allowed at module level
  def get_status_description(self, transaction):
/usr/lib/linuxmint/mintInstall/mintinstall.py:262: SyntaxWarning: import * only allowed at module level
  def get_role_description(self, transaction):
add_categories took 2.890 ms
build_matched_packages took 0.366 ms
9509
add_packages took 5063.649 ms
add_reviews took 965.128 ms
__init__ took 6137.014 ms
_register_active_transactions_watch :1.70
show_category took 5.644 ms

(lines below is displayed after I clicked.)

Traceback (most recent call last):
  File "/usr/lib/linuxmint/mintInstall/mintinstall.py", line 786, in show_package_if_apt_cached
    self.show_package(pkg, tree)
  File "/usr/lib/linuxmint/mintInstall/mintinstall.py", line 48, in wrapper
    res = func(*arg)
  File "/usr/lib/linuxmint/mintInstall/mintinstall.py", line 1440, in show_package
    subs['iconbig'] = self.find_large_app_icon(package)
  File "/usr/lib/linuxmint/mintInstall/mintinstall.py", line 1327, in find_large_app_icon
    return iconInfo.get_filename()
AttributeError: 'NoneType' object has no attribute 'get_filename'

Randomly searched package name "facebook" and clicked on first app. I get same "no attribute" error in the console.