Gradle isn't happy.

C:\Users\Anthony\Desktop\Testing\weather2>gradle build
This mapping 'snapshot_20160518' was designed for MC 1.9.4! Use at your own peril.
:deobfCompileDummyTask
:getVersionJson
:extractUserdev UP-TO-DATE
:downloadClient SKIPPED
:downloadServer SKIPPED
:splitServerJar SKIPPED
:mergeJars SKIPPED
:applyBinaryPatches SKIPPED
:deobfProvidedDummyTask
:extractDependencyATs SKIPPED
:extractMcpData SKIPPED
:extractMcpMappings SKIPPED
:genSrgs SKIPPED
:deobfMcMCP SKIPPED
:sourceApiJava
:compileApiJava UP-TO-DATE
:processApiResources UP-TO-DATE
:apiClasses UP-TO-DATE
:sourceMainJava
:compileJava
C:\Users\Anthony\Desktop\Testing\weather2\build\sources\main\java\weather2\entity\EntityIceBall.java:20: error: EntityIceBall is not abstract and does not override abstract method writeEntityToNBT(NBTTagCompound) in Entity
public class EntityIceBall extends EntityThrowableUsefull implements IWindHandler
^
C:\Users\Anthony\Desktop\Testing\weather2\build\sources\main\java\weather2\entity\EntityIceBall.java:41: error: cannot find symbol
this.setThrowableHeading(this.motionX, this.motionY, this.motionZ, speed, 1.0F);
^
symbol: method setThrowableHeading(double,double,double,float,float)
C:\Users\Anthony\Desktop\Testing\weather2\build\sources\main\java\weather2\util\WeatherUtilBlock.java:37: error: cannot find symbol
BlockPos posSourcei = posSource.toBlockPos();
^
symbol: method toBlockPos()
location: variable posSource of type Vec3
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
3 errors
:compileJava FAILED

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':compileJava'.

  Compilation failed; see the compiler error output for details.

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 24.358 secs

Using CoroUtil 1.1.9 to build it aswell.

Was a mismatch due to uncommitted work.