Every time I try to access an .acsm file (open or run) the ADE 4.0.2 download process initiates instead of downloading the eBook. I already have ADE 4.0.2 installed and authorized and .acsm files are associated to ADE 4.0.2. I've also tried with ADE 2.0 and ADE 3.0 and the same issue occurs. I'm on a Windows 7.0 machine and have tried Firefox and IE.
It doesn't matter if I already have ADE open and running or if I leave it closed before trying to access the .acsm file, it always starts downloading ADE 4.0.2.