ReFills are basically a special format of archive (like zip or rar) for holding patches.
Try sending your friend the patch file just to make sure he can open/use the patch.
To make a ReFill, I suggest that you create a new/empty folder and then put/save all of the patches for the ReFill into that folder - with nothing else in the folder.
Then run ReFill packer and put the folder name into the input folder field
Note that if you use devices in your ReFill that your friend doesn't have (which would happen if he's on an older version of Reason), then he won't be able to use those patches.
HP Pavillion DV7T-3300 Laptop | i7 Q720 @ 1.6 GHz | 4GB RAM | Win7 Pro 64-bit
m-audio Axiom Pro 61 keyboard controller || iPad2 | RetouchControl DUO | TouchOSC | LoopBe30 MIDI
m-audio Mobile Pre USB (original) audio interface | ASIO4ALL || RØDE NT-3 mic
Reason 6.5.3 || Pulsar | Saturation Knob | Rough Rider | TSAR-1 | Uhbik-A | Re-Tron | Polar | Echobode | Uhbik Q | Uhbik F | Morfin XF | Uhbik S | Uhbik D | Uhbik G | CV Suite Line Processor | wbl5515 | Uhbik P | RE-2A | Radical Piano