Ohhhh..... now you make sense.
You cannot copy .rrd files between machinesof different architecture(ie, between big and little endian unixes, or windows). This is because of the .rrd format.
If you want to move an .rrd file between UNIX and windows, you need to unload it to XML, and then reload it on the new machine. Use the appropriate rrdtool options from the command line to do this.
The .cfg files you can move with no problems, although you'll have to change things like Workdir because the paths will now be in Windows format, not UNIX. Also, your routers2.conf will need to have the new Windows path names.
The error message does tell you the problem ('This rrd was created under a different architecture').... next time tell us the error message first to save time...
