Unity 3.4 Error Building Player

When I try to build and run Unity 3.4 I get these two errors:

 Error building Player: Win32Exception: ApplicationName='C:\...\tools\apkbuilder.bat', CommandLine='"C:\...\Temp/StagingArea/Package_unaligned.apk"
 -v -z "C:\...\Temp/StagingArea/assets.ap_"
 -z "C:\...\Temp/StagingArea/bin/resources.ap_"
 -nf "C:\...\Temp/StagingArea/libs" -f "C:\...\Temp/StagingArea/bin/classes.dex"', CurrentDirectory='Temp/StagingArea' UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()

 Exception: Error building Player: Win32Exception: ApplicationName='C:/...\tools\apkbuilder.bat', CommandLine='"C:\...\Temp/StagingArea/Package_unaligned.apk" -v -z "C:\...\Temp/StagingArea/assets.ap_" -z "C:\...\Temp/StagingArea/bin/resources.ap_" -nf "C:\...\Temp/StagingArea/libs" -f "C:\...\Temp/StagingArea/bin/classes.dex"', CurrentDirectory='Temp/StagingArea'
 UnityEditor.BuildPlayerWindow.BuildPlayerWithDefaultSettings (Boolean askForBuildLocation, BuildOptions forceOptions) (at C:/BuildAgent/work/842f9557127e852/Editor/Mono/BuildPlayerWindow.cs:367)
 UnityEditor.BuildPlayerWindow.BuildPlayerAndRun () (at C:/BuildAgent/work/842f9557127e852/Editor/Mono/BuildPlayerWindow.cs:291)

I tried different solutions suggested, such as installing JDK 32 bit, adding the correct folder to the PATH environment variables, copying the zipalign.exe file to the main SDK folder. None of these work. Any other ideas ? I also have Unity 5.0 on my computer and the same project works fine with it, but I need to test this project on Unity 3.4.

Thanks.