simplex update ?

Hi I d/loaded the newest simplex update pac from major geeks and used their d/l tool . Well I tried to run it but bitdfender blocked it said it had Suspicious files. is there a better place to d/l it from or a safer d/l tool ? I didnt have this problem the last time I ran it . july 24
thx for any tips or tricks

Acer aspire 5733-6437
7 home premuim 64 bit

2.66GHz Intel® Core™ i5-480M

4GB DDR3 PC3-8500 memory

THX will do