I went ahead and #commented the "#Check Decodings" command line within the modsec2... configuration file, tested the FT Pages module, and it works now. Both problems have been solved but my guess is that this will leave a security hole in the server. It's not a big problem to me since I'm the only one who accesses and manages my server but it may be to anyone who shares hosting or who manages a dedicated server and allows their clients to install their own web applications.
This might be something to look into if there's some insecure code within the Pages module that's causing this. But for anyone else who manages their own dedicated server and runs into this problem, this is an immediate solution to fix the problem.
This might be something to look into if there's some insecure code within the Pages module that's causing this. But for anyone else who manages their own dedicated server and runs into this problem, this is an immediate solution to fix the problem.