Help with V-USB Library for Arduino

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hi, i'm trying follow instructions in blog post create arduino device emulates usb keyboard.  i've hit few bumps in road , last one's got me stumped.  best hope i'm using wrong version of v-usb arduino project.  got here:

https://code.google.com/archive/p/vusb-for-arduino/

and required cutting out "usbkeyboard" directory under "libraries", , found built on top of old version of usb libraries, , saw guidance elsewhere whomp old copy new stuff here:

https://www.obdev.at/products/vusb/download.html

that replaced of files in usbkeyboard folder.  left compile error pretty easy sort, i'm getting link-time error now, , it's mystifying:

compiling debug version of 'sketch1' 'arduino/genuino uno'

error compiling board arduino/genuino uno
debug build failed project 'sketch1'
winterrupts.c.o (symbol plugin)*: in function attachinterrupt
(.text+0x0)*: multiple definition of __vector_1
usbdrvasm.s.o*: c:\program files (x86)\arduino\libraries\usbkeyboard\usbdrvasm16.inc:34: first defined here
 
cctmpovv.ltrans0.ltrans.o*: in function __vector_1
winterrupts.c:309: multiple definition of __vector_1
usbdrvasm.s.o*: c:\program files (x86)\arduino\libraries\usbkeyboard\usbdrvasm16.inc:34: first defined here
 
cctmpovv.ltrans0.ltrans.o*: in function __base_ctor
usbkeyboard.h:139: undefined reference usbinit()
usbkeyboard.h:146: undefined reference usbsetinterrupt(unsigned char*, unsigned char)
 
collect2.exe*: error: ld returned 1 exit status


there no __vector_1 anywhere , don't see how creative macro's make either.  undefined references seem should easier solve, haven't managed yet.

any tips appreciated.

the error tells you have 2 libraries willing use same interrupt



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