Remove drag+drop requirement

- program can be used without initializing by drag+drop
- added temporary error handling for non-existant folders

UniversalModloader.py

@@ -191,6 +191,14 @@ def mainMenu():
 		if choice == "2": unloadMods(True); input("Press ENTER to continue.")
 		if choice == "3": openModsFolder()
 
+def requestAppPath():
+	while True:
+		clear()
+		dir = input("Please insert a folder via Drag&Drop:\n")
+		dir = dir.replace('"',"")
+		if os.path.isdir(dir) == True:
+			return dir
+
 def setupVariables():
 	global appPath
 	global appName
@@ -199,7 +207,14 @@ def setupVariables():
 	global modPath
 	global originalModPath
 	
-	appPath = sys.argv[1]
+	if len(sys.argv) < 2:
+		appPath = requestAppPath()
+	else:
+		appPath = sys.argv[1]
+	
+	if os.path.isdir(appPath) == False:
+		raise NameError("Folder not found: " +appPath)
+	
 	if os.path.isdir(appPath.replace(" - umlOriginal","")): appPath = appPath.replace(" - umlOriginal","")
 	appName = appPath.replace(os.path.dirname(appPath)+ "\\","")
 	originalAppPath = appPath + " - umlOriginal"