The topic says 2.8.10 & your post says 2.6.10? which version is it that is causing the failed plugins?

Well, none of those Window's Binary exe's ever worked in Linux (natively).

..I'm just saying.

I don't have any of those installed so i guess i am ok.
Probably need to be compiled with the GIMP 2.8.10 libraries Graechan.
Maybe Sam or Lyle can help. As far as i know they are the only two with working compile environments.

Don't know about CalendarGenerator

Separate+ plugin
For those who want to convert an image to CMYK and there are possibly better non-gimp ways.
I'm with GnuTux, no problems here in linux (PClinuxOS 32 bit KDE)

For M$ Windows Win7 VM and Gimp 2.8.10
Just a reminder that (certainly 32 bit, have not got round to 64 bit yet from memory I think it works) copying and renaming the offending .dll still works.

Copy (repeat copy) C:\Program Files\GIMP 2\bin\libtiff-5.dll to your Users /.gimp-2.8 plug-ins folder along with the separate plus files. Rename this copy to libtiff3.dll

screenshots http://i.imgur.com/LXUD9kr.jpg and http://i.imgur.com/sRBuB8W.jpg

That gets it working, it does export and import and you can change the icc profile.

screenshot: http://i.imgur.com/bFd3dKf.jpg

I have another one to add to your list.

GAP 2.6

. . . . doesn't appear to want to work in GIMP 2.8.10 Windows 64bit, on Windows 7 64bit. The plug-ins fail initialize when GIMP scans the plugins folder - each plug-in is unable to start.

Although I can still use it in GAP 2.6 in GIMP 2.8.2 64bit - just weird.