Error when trying to Create/Join Games

[Morgul]

Cannot join any games. Displays the following. Any help appreciated! Thanks!
Note: Game runs fine if I CREATE a game. Just can't join anyone elses.

"Uh oh! Game could not be joined. See error message below."

java.util.concurrent.CompletionException: com.github.nocatch.NoCatchException: java.nio.file.AccessDeniedException: C:\ProgramData\FAForever\bin\BsSndRpt.exe
at java.base/java.util.concurrent.CompletableFuture.encodeRelay(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture.completeRelay(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture$UniRelay.tryFire(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture.postComplete(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(Unknown Source)
at com.faforever.client.task.CompletableTask.lambda$new$1(CompletableTask.java:17)
at javafx.base/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at javafx.base/com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
at javafx.base/com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
at javafx.base/javafx.event.Event.fireEvent(Unknown Source)
at javafx.graphics/javafx.concurrent.EventHelper.fireEvent(Unknown Source)
at javafx.graphics/javafx.concurrent.Task.fireEvent(Unknown Source)
at javafx.graphics/javafx.concurrent.Task.setState(Unknown Source)
at javafx.graphics/javafx.concurrent.Task$TaskCallable.lambda$call$2(Unknown Source)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$9(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(Unknown Source)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: com.github.nocatch.NoCatchException: java.nio.file.AccessDeniedException: C:\ProgramData\FAForever\bin\BsSndRpt.exe
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.github.nocatch.NoCatch.wrapException(NoCatch.java:61)
at com.github.nocatch.NoCatch.noCatch(NoCatch.java:104)
at com.github.nocatch.NoCatch.noCatch(NoCatch.java:82)
at com.faforever.client.patch.GameBinariesUpdateTaskImpl.lambda$copyGameFilesToFafBinDirectory$4(GameBinariesUpdateTaskImpl.java:130)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(Unknown Source)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
at java.base/java.util.Iterator.forEachRemaining(Unknown Source)
at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(Unknown Source)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
at java.base/java.util.stream.ReferencePipeline.forEach(Unknown Source)
at com.faforever.client.patch.GameBinariesUpdateTaskImpl.copyGameFilesToFafBinDirectory(GameBinariesUpdateTaskImpl.java:125)
at com.faforever.client.patch.GameBinariesUpdateTaskImpl.call(GameBinariesUpdateTaskImpl.java:86)
at com.faforever.client.patch.GameBinariesUpdateTaskImpl.call(GameBinariesUpdateTaskImpl.java:39)
at javafx.graphics/javafx.concurrent.Task$TaskCallable.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
... 1 more
Caused by: java.nio.file.AccessDeniedException: C:\ProgramData\FAForever\bin\BsSndRpt.exe
at java.base/sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
at java.base/sun.nio.fs.WindowsFileCopy.copy(Unknown Source)
at java.base/sun.nio.fs.WindowsFileSystemProvider.copy(Unknown Source)
at java.base/java.nio.file.Files.copy(Unknown Source)
at com.faforever.client.patch.GameBinariesUpdateTaskImpl.lambda$copyGameFilesToFafBinDirectory$2(GameBinariesUpdateTaskImpl.java:130)
at com.github.nocatch.NoCatch.noCatch(NoCatch.java:100)
... 20 more

[Morgul]

Has no-one got any ideas with regard to this issue? Suggestions of what I could try, other than reinstalling everything which I've already done?

I'm now getting the same error even when creating games, which is effectively barring me from playing FAF all together!! Waa

[Wesmania]

It looks to me like file permissions are broken in the C:\ProgramData\FAForever directory. Try setting yourself as the owner of this folder recursively, and make sure all files there are readable and writable.