[Dev-C++] Still can't open the application

[<Bha...@cs...>]

Yesterday I downloaded the Dev C++ application twice. It gave me the error 
message for the frist download, so I did it again by downloading file 
devcpp4290, the 9465kb application. It appeared to download successfully but 
gives me the following error message when I click on the application using 
Windows Explorer:

NSIS ERROR       
Installer verification failed   

plus text with possible reasons for the failure including a virus, incomplete 
download and failing disk. I ran McAfee which said the file was clean.

At Ioannis' suggestion I downloaded memt2.9 today, unzipped it and ran it for 
5 passes with no errors reported. Apparently my CPU memory is OK. Thanks for 
the suggestion though, Ioannis.

The NSIS error message also said I could try to force the installation of the 
application using the /NCRC command line switch, but recommended not doing 
that. I don't know how to do that anyway. 

Any suggestions on how I can get the application to execute would be great. 
Should I download it a third time?