Avg tuneup says invalid product key

Hi, today when I started my pc I got a message of avg tuneup and I scanned my pc for errors ,then when it was finished it sent me to download the program here http://www.avg.com/es-es/pc-tuneup-inc-pd?A=TUM1ViBMPUFNN0hCLVJQVVVNLTRTMkVHLVFGSTRILUJIVlRDLUwgST03Ni03ODk2ODMwNDk3IExORz1zcCBWPTIwMTUwNTk2MSBPU1Y9Ni4zLjk2MDAgT1M9WFhYSFg2NCBTU1A9MC4wIE1JRD0xMjBlMmY3NDhiMjQ0N2NkYTFlNWE1OWQ3MzU1YmVkYi02OTNhMDlmMTdiOWRiOWJhODcxNDBiZWYyM2JhNTA4YjY1YWQ1MDU3IEJFPTIwNyBBST0wIFBSVFlQRT05MiBMVD00IFVJRD0gQUlEPSBBQ0NJRD0wIFNJRD1hdmdjb20&cmpid=incP_analyzer_fix&intcmp=inc_paid_tune_up_fix_13_7084&sourceid=id0&hpv=none

it downloaded the file called "avg_tuh_stf_all_2015_518_24c34" , when trying to install it I got this error







please, why is it happening? also, I tried to look for avg tuneup on google and downloaded "avg_tuht_stf_all_2015_518_ab8"



why are both programs with different names?

thanks for answering

Marco, please note that it is not possible to install a trial version of AVG product two times on same computer. When you try to install it for a second time, it will either ask a license number or reports any error message like this.

Marco, please note that it is not possible to install a trial version of AVG product two times on same computer. When you try to install it for a second time, it will either ask a license number or reports any error message like this.


But the thing here is that I could install the avg tuneup from here 
PC Cleaner & Tune Up | Download Trial | AVG with no license or anything and had no problems at all, I just want to know, why those two links lead to different programs.

Hello Marco, this is the official link through which you can download and install AVG PC tune up. http://www.avg.com/us-en/avg-pctuneup . I request you to install the program through the above link.Thank you.