why did my build fail in my winform project with devexpess 8.1.5 in vs2010 rtm ?

See more:

Visual-Studio

VS2010

DevExpress

this is some detail info:

my project must use devexpress 8.1.5 ,for some reason, and uses vs2010 rtm .I have changed my machine.config add

<runtime>

<netfx40_legacysecuritypolicy enabled="true" />

</runtime>

but it build fail.

my project has some report ,ie. *.rdlc when building

msbuild report fail ,some infomation as follows:

Target "RunRdlCompiler: (TargetId:283)" in file "C:\Program Files\MSBuild\Microsoft\VisualStudio\v10.0\ReportingServices\Microsoft.ReportingServices.targets" from project "D:\WorkSpace\MyClient.csproj" (target "CompileRdlFiles" depends on it):

Building target "RunRdlCompiler" completely.

Output file "obj\Debug\RdlCompile.compiled" does not exist.

Using "RdlCompile" task from assembly "Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".

Task "RdlCompile" (TaskId:209)

Done executing task "RdlCompile" -- FAILED. (TaskId:209)

Done building target "RunRdlCompiler" in project "ConveyanceClient.csproj" -- FAILED.: (TargetId:283)

can anyone help me ?

thanks !