Can't build properly on OSX about raftools

[Rested]

and when i try to click on a dds file after running from bin/lib/ i get

Exception in thread "AWT-EventQueue-0" java.nio.BufferUnderflowException
at java.nio.Buffer.nextGetIndex(Buffer.java:506)
at java.nio.HeapByteBuffer.getInt(HeapByteBuffer.java:361)
at net.vs49688.rafview.dds.DDSImage$Header.read(DDSImage.java:610)
at net.vs49688.rafview.dds.DDSImage.readFromBuffer(DDSImage.java:714)
at net.vs49688.rafview.dds.DDSImage.read(DDSImage.java:195)
at net.vs49688.rafview.gui.DDSViewer.setDDS(DDSViewer.java:68)
at net.vs49688.rafview.gui.Controller$DDSDelayedLoader.lambda$load$0(Controller.java:394)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

[vs49688]

Right, so in regards to the first one, it's not actually possible to run it directly via Gradle. I usually just run gradle jar and use the JAR file.

As for the DDS issue, it's possible that it's in a format that's not supported by the loader. Does this problem occur with all DDS files, or just that one? Try loading one of the champion splashes that appear on the loading screen - they should work.