CRC errors indicate corruption within the file that is trying to load … Does a file name get stated ?
“CRC error: The file E:\League of Legends\RADS\projects\lol_air_client\releases\0.0. 0.36\deploy\css\fonts_pl_PL.swf.cache doesn’t match the file in the setup’s .cab file. The medium from which you are running the setup may be corrupted, contact your software vendor”. I read up about people who chose to ignore the error and said that they get many of these same errors, and upon completion the game is unplayable which is my original problem so I chose to abort the installation for now. 
There is a corruption within the disc that you are trying to install from… Can you get a downloadable copy of the set up files ?
Yeah yeah the game I’m installing is from the downloader installed off the website. I’ve tried redownloading it this morning and reinstalling but hitting the same error 
That sounds like the installer on the website is corrupt
Hopefully I’ll be able to get it sorted out soon ! Thanks again so much for all the help you have given me though I honestly can’t thank you enough ;D
Subject to no further problems 
I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems
Now the best part of the day ----- Your log now appears clean 
A good workman always cleans up after himself so…The following will implement some cleanup procedures as well as reset System Restore points:
Remove ComboFix
[*]Hold down the Windows key + R on your keyboard. This will display the Run dialogue box
[*]In the Run box, type in ComboFix /Uninstall
(Notice the space between the “x” and “/”)
then click OK
http://i1224.photobucket.com/albums/ee362/Essexboy3/Misc%20screen%20shots/CF_Uninstall-1.jpg
[]Follow the prompts on the screen
[]A message should appear confirming that ComboFix was uninstalled
Run OTL and hit the cleanup button. It will remove all the programmes we have used plus itself.
Clear Restore Points
Go Start > All Programmes > Accessories > System tools
Right click Disc Cleanup and select run as administrator
When it pops up at the first prompt select OK after it has done some calculations the tabs will appear
Select More Options tab
Press Sytem Restore and Shadow Copies Cleanup button
https://dl.dropbox.com/u/73555776/disc%20clean.JPG
Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:
http://img233.imageshack.us/img233/7729/mbamicontw5.gif
Malwarebytes.
Update and run weekly to keep your system clean
Download and install FileHippo update checker and run it monthly it will show you which programmes on your system need updating and give a download link
If you use on-line banking then as an added layer of protection install Trusteer Rapport
It is critical to have both a firewall and anti virus to protect your system and to keep them updated. To keep your operating system up to date visit
[*]Microsoft Windows Update
To learn more about how to protect yourself while on the internet read our little guide How did I get infected in the first place ?Keep safe 
Hi again ! I’d just like to say how thankful I am again for your help. My laptop is running smoothly in all ways apart from the mystery corrupted files which I am sure is related to Net.Framework in some way. How that is tying into the game I dont know but I appreciate everything man !
Well you could uninstall and then re-install net framework if necessary but, I do not believe it is needed for that programme
Yeah yeah I’ve tried a Net framework cleanup tool that uninstalled all versions but the sfc /scannow and CHKDSK checks both detected a form of corruption/errors that they were unable to fix. I’m almost certain it is to do with Net framework despite having uninstalled and reinstalled them
Normally the unfixable errors are ini files which are not overly important. If you have removed and then reinstalled net framework, I do not feel that would be the problem
I dont know to be honest haha I’m at my wit’s end ! The computers performing fine as it is so you’re right in that whatever is wrong can’t be that important. Have to see if I can get this ‘corrupted file’ sorted
hmm that’s weird. Sorry to be a pain haha but there is no 'Microsoft NET.Framework appearing in the list of programs and features, yet there is still a load of versions and files that look unchanged in the C: drive Net.framework folder. They are also appearing in regedit, suggesting they are still installed. I can’t delete them either even though I have full admin rights. Could this be another virus or something else?
Try this small programme
This could be a .Net problem, so we will need to uninstall and then re-install .Net framework
Download Dontetfx cleanup tool. zip to your desktop
Unzip the tool
Run the exe file
Click throught the EULA popups
Select All Version
https://dl.dropbox.com/u/73555776/dotnetfx.JPG
Once done reboot the computer
Download then run the Net 4.0 installer from here
Then install
Done that and the corrupted files are still being found. Absolutely cannot remove Net.framework version 2.0 which I discovered comes built into Windows 7. I think after reading around that it is becoming more and more apparent that my Windows 7 itself has become corrupt in some way…Darn it
You could try a repair tool
Download Windows Repair (all in one) from this site
Install the programme then run
https://dl.dropbox.com/u/73555776/waio%20start.JPG
Go to step 3 and allow it to run SFC
https://dl.dropbox.com/u/73555776/waio%20step3.JPG
On the start repairs tab click start
https://dl.dropbox.com/u/73555776/waiostart%20rep.JPG
Select the following items and tick restart system when finished
Well that was strange. After logging in it took an inordinate amount of time for everything to load up (blank screen for ages) and when it all finally loaded up I got this error I caught in a screenshot. I will try the game reinstallation again and I can let you know how it goes later if you like 
Aye let me know how the system behaves after the repair run
System is running absolutely fine just as before. All except for this game so I’m heavily messaging them because they haven’t replied in 3 days. Cant be installer,corrupt downloads because I’ve tried from loads of different mirrors and also deactivating windows and avast to make sure they are not interfering. Oh well thanks for your help for everything !
Let me know if they get back to you with a resolution