Lets all take notice today from what happened to VeriCoin (which I do not own) on Mintpal.
If you are not actively trading your CINNI, then there is no reason to keep it all on an exchange. Stake your CINNI and earn PoS interest instead!
In case you are not sure what issue I am referring to:
https://support.mintpal.com/index.php?module=announce&sec=view&id=17http://www.vericoin.info/downloads/Statement.pdfThe network is more secure when many people are staking instead of a large percentage of a currency being held in one place (in this case about 30% or VRC was held at Mintpal).
I can help securing the network by staking if someone is helping me compiling the wallet

src/qt/qrcodedialog.cpp:12:22: fatal error: qrencode.h: File or directory not found
#include
^
compilation terminated.
Looks like you are missing some packages, check the post in linked to below from the feathercoin forums. The poster there was getting the same error as you "fatal error: qrencode.h: File or directory not found" and solved it. Read the whole post as other errors could come after this one and the post has solutions to fix them also.