Rockbox ''Incompatible Plugin Version'' issue

Few days back I Rockboxed my Fuze v2 with the latest stable built (3.7.1) with the rockbox utility (auto installation). After a lot of customization and stuff (made a custom theme :grinning_face_with_smiling_eyes: ) I deleted some plugins in haste and now I want them back.
I tried the simple way of re-downloading rockbox_sansafuzev2.zip and copying the required plugins (pictureflow.rock and clock.rock) from there to my .rockbox\rocks\apps folder.
But now when I try to load them it gives an error ‘‘Incompatible Version’’…other plugins are working fine.
Please help out as I don’t want do this whole thing right from the start (I didn’t create a backup of my configs)!

go for the fresh manual install… should be easier than trying to figure out what went wrong.

You are right, its a bug and a fresh install is the easier way…Btw in the process I’ve fine tuned and uploaded my theme
And now it’s bliss!