I manually updated cURL, and now I'm getting this exception message:
Error! Reading image data from stdin is not available this tesseract version\n
Required version is 3.03-rc1, actual version is /usr/local/lib/libcurl.so.4:\n
\n
Generated command:\n
"tesseract" "" "/tmp/ocrtbpkr845e3jrdcMeKTs"
I'm guessing that checking Tesseract's version fails (due to some messing up of cURL) , and therefore your library assumes that the version is too low. So I'm suggesting to change this: If the version is unclear, assume that it's OK. From what I can see, the required version is mostly 3, and current version is 5, so the majority probably has the right version anyway...