I keep getting this error:

Zip Extraction Error:
ExtractTofolder(
"C:\Users\Timothy Morris\AppData\Local\Temp\UGX Map Manager\Cabin%20v1.1.zip",
"C:\Users\Timothy Morris\AppData\Local\Temp\UGX Map Manager\Cabin%20v1.1.zip",
True
);

Exception Message:

CRC Mismatch

Then it says:

Installing the downloaded map failed. The downloaded zip will be kept in the user temp folder until the program closes.

Help:
Because the specfic point at which the install failed is unknown, nothing will be erased from what was completed of the install. However, the zip file downloaded is kept in your user temp folder. You may use it to see what files should be installed, and delete ones that successfully installed if you'd like.

Error code - Please show this to [UGX] Aidan: 3

Note: i have redownloaded the map in question several times as said on the forums previously with no result. I have however been able to manually install a few maps that i found from "customcod.com."

Go to http://speedtest.net and post your results here.

1 Unnecessary start up item,  10 registry irregularities, 14 repairable security vulnerabilities, one or more signs of corruption, your internet settings may not be optimized for best performance, your computer contains 4.93 GB of system file clutter in 26782 files, Your computer contains 21.43 MB of internet clutter in 982 files.

1 Unnecessary start up item,  10 registry irregularities, 14 repairable security vulnerabilities, one or more signs of corruption, your internet settings may not be optimized for best performance, your computer contains 4.93 GB of system file clutter in 26782 files, Your computer contains 21.43 MB of internet clutter in 982 files.

Speedtest.net is used to test your Internet speed. It sounds like you clicked an advertisement...
Here is a guide on using the site:

How to use Speedtest.net

download is 21.12 mbps and upload is 8.79mbps

download is 21.12 mbps and upload is 8.79mbps

What about ping?

ping is like 10

ping is like 10

Well then it's definitely not your internet connection that's a problem. Do you have any anti-virus or firewall installed? Did you try running the Manager as an Administrator?

Yes I have run it as administrator, and I have Windows Defender which doesn't work very well

Yes I have run it as administrator, and I have Windows Defender which doesn't work very well

Have you tried downloading any maps other than Cabin? Try downloading Zombie House, it's the smallest-sized map (megabyte-wise) on the Manager and would be a good test.

I have tried Cabin previously and with no result   

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Post Merge: July 09, 2013, 06:04:14 pm

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Sorry, I have downloaded other maps, like Illuminati Island, Comosea, and more.

I have tried Cabin previously and with no result   

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Post Merge: July 09, 2013, 06:04:14 pm

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Sorry, I have downloaded other maps, like Illuminati Island, Comosea, and more.

Maybe there is a problem with the Cabin download, then. I'll check it out when I get a chance and let you know soon.

I haven't changed anything and I'm able to download UGX Cabin perfectly fine.

then how come I am not able to download any maps then? My internet is fine, and my computer installs everything else perfectly.

then how come I am not able to download any maps then? My internet is fine, and my computer installs everything else perfectly.

I have also verified cabin works fine for me. If its not working for you then you are missing something, most likely one of the things on the UGX Map Manager FAQ. This program works fine for hundreds of other people so this is not a fault on our end.