I installed opera then uninstalled it then tried to reinstall it again and got two errors. (and it won't install now) I've tried the offline version too. Same thing happens.

I get the error with the red X first. Then the other one comes up.

My system:
Windows 7 ultimate 64-bit
16GB RAM
39GB HDD remaining
Nvidia graphics card with 512MB RAM
Intel i5 quad-core CPU

Any ideas you have are welcome. Thanks in advance.