Same, I (among other people that I found while looking for solutions to this issue) are having problems getting the launcher to even load. It appears on the task manager as a background process but nothing happens and keeps CPU processing, memory, etc. at 0%. I used the FTB App I believe about 2 months prior, and made a great amount of progress on my FTB Academy world. On 9/14, I went to load up they FTB App so I could play FTB Academy but FTBA simply wouldn't load. I had uninstalled and reinstalled the FTBA 7 times (I know this because my executables name ends in (8)). At that point I had just caved in and gave up on my 100+ hours world. Out of curiosity, today I chose to look through the crash logs of the most recent date and find this...
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See
http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Oct 22, 2020 9:36:13 PM net.creeperhost.creeperlauncher.CreeperLogger error
SEVERE: Not a valid instance '.localCache', skipping...
com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:226)
at com.google.gson.Gson.fromJson(Gson.java:927)
at net.creeperhost.creeperlauncher.pack.LocalInstance.<init>(LocalInstance.java:150)
at net.creeperhost.creeperlauncher.Instances.loadInstance(Instances.java:70)
at net.creeperhost.creeperlauncher.Instances.refreshInstances(Instances.java:52)
at net.creeperhost.creeperlauncher.CreeperLauncher.main(CreeperLauncher.java:119)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:84)
at com.exe4j.runtime.WinLauncher.main(WinLauncher.java:94)
at com.install4j.runtime.launcher.WinLauncher.main(WinLauncher.java:25)
Caused by: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $
at com.google.gson.stream.JsonReader.beginObject(JsonReader.java:385)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:215)
... 12 more
Uncaught error fetching image:
java.lang.NullPointerException
at java.desktop/sun.awt.image.URLImageSource.getConnection(URLImageSource.java:101)
at java.desktop/sun.awt.image.URLImageSource.getDecoder(URLImageSource.java:111)
at java.desktop/sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:263)
at java.desktop/sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:212)
at java.desktop/sun.awt.image.ImageFetcher.run(ImageFetcher.java:176)
I know how to navigate through windows and manually mod games by copying and pasting files/folders, but I just don't understand the issue is about "SLF4J: Failed to load class “org.slf4j.impl.StaticLoggerBinder”" and this stuff about the creeper launcher. Any help will be greatly appreciated.
SSD, I first got a problem that was quickly solved in this thread: