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when I click Compile button，It will showe error: non-hexadecimal number found in fromhex（） arg at position 0
 from Shangrlia i get this error:
Coul…
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Now I try to use Shangrila and this is what I have after uploading a pdf for testing:
![extraction](https://cloud.githubusercontent.com/assets/10496910/9894400/649955d2-5bd8-11e5-846a-8d14b28a15a2.png…