I'm sick of the security feature

   I have put the security feature into our application, but it always come with perplexing errors, for example, my first application got such error regarding to the DomainModelEntityManager.

from the error above, it doesn't make sense, because i initialized '_manager' in the beginning by the 'DomainModelEntityManager.DefaultManager', it shouldn't have such error.

i rewirte whole security feature second time, every thing are the same, but it comes out different error regarding to 'LoginManager.cs' reference.

this error should because the config file doesn't list proper assembly names as once DomainModelEntityManager.Login once being code, the program will look through the app.config file to go through the list of assembly names to find out 'LoginManager' class. BUT i do list the aseembly names PROPERLY

you see, I put "Server" as assembly name in the end. this fold contains the login manager.

in that 'LoginManager.cs" file I declared 'LoginManager' class.

but once i rewrite the 3rd time of program, everyting runs properly which doesn't make sense to me.

so I decide to put security feature into our program, but once i did that, the second error comes out again, program couldn't find 'LoginManager' class which has been defined and properly listed in the app.config file. I really feel frustrated, because all the program are the same, but come out different errors and even runs once, which doesn't make sense to me.