Rather than copy/past all the posts on this issue I'll just post a link to the thread at Synapse. Basically what's happening is .fxp files saved from Reaper with Synapse Audio's EKS Pro kick synth plugin will not reload in Reaper although the same patches will load in other DAWs. Patches saved in .rpl format will load.
http://forum.synapse-audio.com/viewt...hp?f=5&t=12020