Execution failed for task reobf

Hello everyone,

I can't seem to make mods since I am getting a reobf failed error.

This seems to be kinda random (It's not with a specific mod) and once it happens (which is quite frequently) the only solution seems to delete my workspace (losing my mod) and reinstall MCreator (today I already did it twice). It's so annoying, I tried everything and I am about to give up.

I would like to know what is this error (why it happens) and how to fix it, please.

Here's the console log when I try to recompile the mod on MCreator.

Executing gradle command: build
Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. Todos os direitos reservados.
C:\Pylo\MCreator172>cd forge
C:\Pylo\MCreator172\forge>SET "JAVA_HOME=C:\Pylo\MCreator172\jdk64\"
C:\Pylo\MCreator172\forge>SET JAVA_EXE=%JAVA_HOME%\bin\java.exe
C:\Pylo\MCreator172\forge>SET PATH=%JAVA_HOME%\bin\;%PATH%
C:\Pylo\MCreator172\forge>gradlew -Dorg.gradle.jvmargs="-Xms625m -Xmx2048m" build
To honour the JVM settings for this build a new JVM will be forked. Please consider using the daemon: http://gradle.org/docs/2.0/userguide/gradle_daemon.html.
****************************
 Powered By MCP:            
 http://modcoderpack.com/   
 Searge, ProfMobius, Fesh0r,
 R4wk, ZeuX, IngisKahn, bspkrs
 MCP Data version : unknown
****************************
:compileApiJava UP-TO-DATE
:processApiResources UP-TO-DATE
:apiClasses UP-TO-DATE
:sourceMainJava UP-TO-DATE
:compileJava
:processResources UP-TO-DATE
:classes
:jar UP-TO-DATE
:compileTestJava UP-TO-DATE
:processTestResources UP-TO-DATE
:testClasses UP-TO-DATE
:test UP-TO-DATE
:extractMcpData UP-TO-DATE
:getVersionJson
:extractUserDev UP-TO-DATE
:genSrgs SKIPPED
:reobf FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':reobf'.
> MALFORMED
* 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: 34.174 secs
C:\Pylo\MCreator172\forge>
Task completed with return code 0 in 35095 milliseconds

Thanks in advance.