.Net Google Calendar API issu (DLL conflict ?) about google-gdata HOT 2 OPEN

Sorry wrong log (and no 12180 error in the log, this error happens when 
Google.Apis.Auth.OAuth2.Responses.TokenResponse" file exist)

System.Net.Sockets Verbose: 0 : [2840] 
TcpListener#60068066::TcpListener(127.0.0.1#16777343)
System.Net.Sockets Verbose: 0 : [2840] Socket#33675143::Socket(AddressFamily#2)
System.Net.Sockets Verbose: 0 : [2840] Exiting Socket#33675143::Socket() 
System.Net.Sockets Verbose: 0 : [2840] Exiting 
TcpListener#60068066::TcpListener() 
System.Net.Sockets Verbose: 0 : [2840] TcpListener#60068066::Start()
System.Net.Sockets Verbose: 0 : [2840] 
Socket#33675143::Bind(127.0.0.1:0#16777343)
System.Net.Sockets Verbose: 0 : [2840] Exiting Socket#33675143::Bind() 
System.Net.Sockets Verbose: 0 : [2840] Socket#33675143::Listen(Int32#2147483647)
System.Net.Sockets Verbose: 0 : [2840] Exiting Socket#33675143::Listen() 
System.Net.Sockets Verbose: 0 : [2840] Exiting TcpListener#60068066::Start() 
System.Net.Sockets Verbose: 0 : [2840] TcpListener#60068066::Stop()
System.Net.Sockets Verbose: 0 : [2840] Socket#33675143::Close()
System.Net.Sockets Verbose: 0 : [2840] Socket#33675143::Dispose()
System.Net.Sockets Verbose: 0 : [2840] Exiting Socket#33675143::Close() 
System.Net.Sockets Verbose: 0 : [2840] Socket#34640832::Socket(AddressFamily#2)
System.Net.Sockets Verbose: 0 : [2840] Exiting Socket#34640832::Socket() 
System.Net.Sockets Verbose: 0 : [2840] Exiting TcpListener#60068066::Stop() 
System.Net Information: 0 : [2840] Le type d'installation du système 
d'exploitation actuel est 'Client'.
System.Net.Sockets Verbose: 0 : [2840] DNS::GetHostEntry(localhost)
System.Net.Sockets Verbose: 0 : [2840] DNS::GetHostByName(localhost)
System.Net.Sockets Verbose: 0 : [2840] Exiting DNS::GetHostByName()     -> 
IPHostEntry#20234383
System.Net.Sockets Verbose: 0 : [2840] Exiting DNS::GetHostEntry()  -> 
IPHostEntry#20234383

I found the origin of this issue : One of the old libraries load 
C:\Windows\SysWOW64\quartz.dll. When this library is not loaded, quartz.dll is 
not loader and everything works.

I think there is a conflict on this specific dll... Is there any specialist to 
tell me why ?