Failed to use DataFlow in production

Question

Hi!

I have tried to use DataFlow in production and found out that it's not able to run.

Here is the code that try to run: (very simple)

var ab = new ActionBlock<int>(delegate(int i)
            {
                //Compute(i);
            });

The result is:

Unhandled Exception: System.TypeLoadException: Could not load type 'System.Dia
ostics.Tracing.EventSource' from assembly 'mscorlib, Version=4.0.0.0, Culture=
utral, PublicKeyToken=b77a5c561934e089'.
   at System.Threading.Tasks.Dataflow.ActionBlock`1..ctor(Delegate action, Exe
tionDataflowBlockOptions dataflowBlockOptions)
   at System.Threading.Tasks.Dataflow.ActionBlock`1..ctor(Action`1 action)
   at ******.Hosts.TempConsole.Program.Main(String[] args)

I saw a differences in versions in mscorlib.dll file (looks like it's the problem).

My version (rnd machine):4.0.30319.17379

Production: 4.0.30319.1 (RTMRel.030319-0100)

some how the class EventSource it involved here. it's .NET 4.5 class and I can't understand how is this possible?

I have 2011 beta installed in the complier machine. I've started uninstall it.

Will update later if helped.

Thanks.

Answer 1

Hi Eitan-

It sounds like you referenced the System.Threading.Tasks.Dataflow.dll from .NET 4.5 Beta when you built, and then tried to run on a machine with .NET 4 installed.  Is your project a .NET 4.5 project or a .NET 4 project?

Answer 2

nop..

The project is 4.0 (it's VS 2010).

And the project is referenced to C:\Windows\Microsoft.NET\Framework\v4.0.30319\System.Threading.Tasks.Dataflow.dll.

Answer 3

an update - uninstalling the VS 2011 abd restart - didn't help! same error.

the file version of System.Threading.Tasks.Dataflow.dll is: 4.0.30319.17379 built by: FXBETAREL

Answer 4

another instresting update:

I added the code:

                Console.WriteLine("ActionBlock<int> assembly location:{0}", typeof(ActionBlock<int>).Assembly.Location);
                Console.WriteLine("GlobalAssemblyCache:{0}", typeof(ActionBlock<int>).Assembly.GlobalAssemblyCache);

in my machine:

ActionBlock<int> assembly location:C:\windows\Microsoft.Net\assembly\GAC_MSIL\System.Threading.Tasks.Dataflow\v4.0_4.0.0.0__b77a5c561934e089\System.Threading.Ta
sks.Dataflow.dll

GlobalAssemblyCache:True

in production:

ActionBlock<int> assembly location:C:\Program Files\HP\TrySetup\System.Threading.Tasks.Dataflow.dll
GlobalAssemblyCache:False

Could not load type 'System.Diagnostics.Tracing.EventSource' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

Answer 5

Found the issue:

referencing the file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\System.Threading.Tasks.Dataflow.dll

caused the problem.

After changing the reference to C:\Program Files\Microsoft Corporation\TPL Dataflow\redist\System.Threading.Tasks.Dataflow.dll

all start working!!

the files are differnet in sizes and versions. what is that? both are for 4.0...