Hi,
Just installed (IDE v1.6.7 here) and it compiles fine. The final messages in the compile include the library location, FWIW:
Using library EasyTransferI2C in folder: D:\Documents\Arduino\libraries\EasyTransferI2C (legacy)
Sketch uses 3,470 bytes (11%) of program storage space. Maximum is 30,720 bytes.
Global variables use 244 bytes (11%) of dynamic memory, leaving 1,804 bytes for local variables. Maximum is 2,048 bytes.
Cheers,
Geoff