ssdt - What is Microsoft.Data.Tools.Prototype? -

ssdt - What is Microsoft.Data.Tools.Prototype? -

i working on application calls microsoft.sqlserver.dac.dacservices.deploy(). within function looking microsoft.data.tools.prototype, it's not able load assembly (microsoft.data.tools.prototype.dll).

here exception dump:

system.io.filenotfoundexception occurred _hresult=-2147024894 _message=could not load file or assembly 'microsoft.data.tools.prototype, version=10.3.0.0, culture=neutral, publickeytoken=b03f5f7f11d50a3a' or 1 of dependencies. scheme cannot find file specified. hresult=-2147024894 istransient=false message=could not load file or assembly 'microsoft.data.tools.prototype, version=10.3.0.0, culture=neutral, publickeytoken=b03f5f7f11d50a3a' or 1 of dependencies. scheme cannot find file specified. source=mscorlib filename=microsoft.data.tools.prototype, version=10.3.0.0, culture=neutral, publickeytoken=b03f5f7f11d50a3a fusionlog==== pre-bind state info === log: displayname = microsoft.data.tools.prototype, version=10.3.0.0, culture=neutral, publickeytoken=b03f5f7f11d50a3a, processorarchitecture=msil (fully-specified) log: appbase = file:///c:/users/fjohnson/desktop/app/databasebuilder.wpf/bin/debug/ log: initial privatepath = null

calling assembly : microsoft.data.tools.schema.sql, version=10.3.0.0, culture=neutral, publickeytoken=b03f5f7f11d50a3a.

log: bind starts in default load context. log: using application configuration file: c:\users\fjohnson\desktop\app\databasebuilder.wpf\bin\debug\databasebuilder.vshost.exe.config log: using host configuration file: log: using machine configuration file c:\windows\microsoft.net\framework64\v4.0.30319\config\machine.config. log: post-policy reference: microsoft.data.tools.prototype, version=10.3.0.0, culture=neutral, publickeytoken=b03f5f7f11d50a3a, processorarchitecture=msil log: attempting download of new url file:///c:/users/fjohnson/desktop/app/databasebuilder.wpf/bin/debug/microsoft.data.tools.prototype.dll. log: attempting download of new url file:///c:/users/fjohnson/desktop/app/databasebuilder.wpf/bin/debug/microsoft.data.tools.prototype/microsoft.data.tools.prototype.dll. log: attempting download of new url file:///c:/users/fjohnson/desktop/app/databasebuilder.wpf/bin/debug/microsoft.data.tools.prototype.exe. log: attempting download of new url file:///c:/users/fjohnson/desktop/app/databasebuilder.wpf/bin/debug/microsoft.data.tools.prototype/microsoft.data.tools.prototype.exe.

stacktrace: @ system.reflection.runtimeassembly._nload(assemblyname filename, string codebase, evidence assemblysecurity, runtimeassembly locationhint, stackcrawlmark& stackmark, intptr pprivhostbinder, boolean throwonfilenotfound, boolean forintrospection, boolean suppresssecuritychecks) @ system.reflection.runtimeassembly.internalloadassemblyname(assemblyname assemblyref, evidence assemblysecurity, runtimeassembly reqassembly, stackcrawlmark& stackmark, intptr pprivhostbinder, boolean throwonfilenotfound, boolean forintrospection, boolean suppresssecuritychecks) innerexception:

ssdt