Installing SX3 on a C5 System

I already have Cubase 5.5.3 installed on my PC but my old SX3 projects are not loading properly in it. If I install SX3 on this PC in a different folder will that cause any problems with Cubase 5? I have done it the other way around before with no problem i.e. installed C5 after SX3 but I just re-installed my system and currently only have C5 on so now I would like to add SX3 too.
Thanks

Hello,

yes you can install Cubase SX3 also on your machine. Please download and install the latest version of the eLicenser Control Center after you have installed all the Cubase SX3 updates.

Cheers,

Chris