Pando Media Booster

Hi ppl.When i was trying to install Ace Online (does anyone play)
and Pando Media Booster was running, an error popped up.I dont know what the error says because of my korean comp. but i no the error number
0xc150004yeah. so does anyone know what that means?
i think it has something to do with .net framework but i dont know

This error means it's missing dll files needed to run.
Make sure you have Microsoft's .NET Framework installed.
http://www.microsoft.com/downloads/details.aspx?FamilyId=333325FD-AE52-4E35-B531-508D977D32A6&displaylang=en

but it still doesnt work.
and why do i have multiple .net frameworks?
would having 3.5 and 2.0 be a problem?if having two is the problem then great but if it isnt....
what do i do?

Installing a newer version of the .NET framework should just overwrite the older versions, so that isn't the issue.Contact the Ace Online customer support, maybe they have an answer.