QCA enc/dec(AES128) , crashing when start in other computer
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When i start my own software in my developer machine it start and enc/dec fine, but when other machine run it got crash, in app folder, i put dlls, libqca.dll, and in pluglins/crypto/ libqca-ossl.dll, libqca-softstore.dll, libqca-gnupg.dll, libqca-logger.dll the application start, but when i click in buton to enc or dec it crash. exist others dlls that i need to put in folder? 
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Hi and welcome to devnet, Did you check that you also have the dependencies of QCA along your application ? As well as the dependencies of the plugins ? e.g. OpenSSL 
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You should use Dependency Walker and check for the missing .dlls. You also have windeployqt that should help you with this task. 
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You should use Dependency Walker and check for the missing .dlls. You also have windeployqt that should help you with this task. 
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Unfortunately the image upload is currently broken. Here you have a guide on how to insert images. 
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That part looks good. Did you run windeployqt ? 
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@SGaist 
 yes i run, but when i start my app, it showmessage, missing libqca.dllits my ´.pro file, i am made any mistake? #------------------------------------------------- # # Project created by QtCreator 2016-10-13T23:30:41 # #------------------------------------------------- QT += core gui network greaterThan(QT_MAJOR_VERSION, 4): QT += widgets CONFIG += crypto TARGET = QCrypto TEMPLATE = app SOURCES += main.cpp\ qcrypto.cpp \ issecurebuild.cpp HEADERS += qcrypto.h \ issecurebuild.h FORMS += qcrypto.ui INCLUDEPATH += C:/QCA/include/QtCrypto LIBS += -L"C:/QCA/lib" LIBS += -lqca LIBS += -L"C:/QCA/lib/qca/crypto" -lqca-ossl -lqca-gnupg -lqca-logger -lqca-softstoreif i am put the dll in the folder the app open, but if i try to enc/dec crashs... 
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a wild shot from 
 http://stackoverflow.com/questions/20623326/compiled-app-wants-to-load-dll-from-absolute-pathTry to create a new sub folder 
 crypto
 and place
 libqca-ossl.dll
 and friends there.
 
