Cannot Use Along with Stackblur

The title explain itself, this library cannot be used along with stackblur, because of a "duplicated renderscript error"
Follows the log:

Error:Execution failed for task ':app:dexDebug'.

> com.android.ide.common.internal.LoggedErrorException: Failed to run command:
> C:\Users\Wiloo\AppData\Local\Android\sdk\build-tools\21.1.2\dx.bat --dex --no-optimize --output C:\Users\Wiloo\AndroidStudioProjects\ProtoFragment\app\build\intermediates\dex\debug --input-list=C:\Users\Wiloo\AndroidStudioProjects\ProtoFragment\app\build\intermediates\tmp\dex\debug\inputList.txt
> Error Code:
> 2
> Output:
> UNEXPECTED TOP-LEVEL EXCEPTION:
> com.android.dex.DexException: Multiple dex files define Landroid/support/v8/renderscript/Allocation$1;
> at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:596)
> at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:554)
> at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:535)
> at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:171)
> at com.android.dx.merge.DexMerger.merge(DexMerger.java:189)
> at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:454)
> at com.android.dx.command.dexer.Main.runMonoDex(Main.java:303)
> at com.android.dx.command.dexer.Main.run(Main.java:246)
> at com.android.dx.command.dexer.Main.main(Main.java:215)
> at com.android.dx.command.Main.main(Main.java:106)

Once the line compile project(':StackBlur') is removed from the build.gradle the project works just fine. Any idea why this is happening?

Inspect the app's build.gradle and the compile project(':StackBlur') dependency, then reproduce the :app:dexDebug failure. Trace which dependency supplies android/support/v8/renderscript/Allocation and confirm the duplicate class source. Done means the project can include StackBlur and build successfully without the duplicated renderscript error.

Written by the indexing model from the issue text.