public boolean isCurrentAssetValid(){
        if(readOnly){
            return false;
        }
        
        String relativePath = getCurrentAssetRelativeFilename();
        if(relativePath == null){
            return false;
        }
        
        File file = new File(ProjectMgr.getAssetsPath(), relativePath);
        
        if(file.isDirectory()){
            return false;
        }
        
        return true;
    }