| Package | Description | 
|---|---|
| net.minecraftforge.fml.client | |
| net.minecraftforge.fml.common | |
| net.minecraftforge.fml.common.toposort | |
| net.minecraftforge.fml.common.versioning | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | CustomModLoadingErrorDisplayExceptionIf a mod throws this exception during loading, it will be called back to render
 the error screen through the methods below. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | DuplicateModsFoundException | 
| class  | LoaderException | 
| class  | LoaderExceptionModCrashPrevent LoaderException from adding its own stack trace to the wrapped throwable's stack trace. | 
| class  | MissingModsException | 
| class  | MultipleModsErrored | 
| class  | WrongMinecraftVersionException | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ModSortingException | 
| Modifier and Type | Class and Description | 
|---|---|
| private static class  | DependencyParser.DependencyParserException |