diff --git a/backends/file.py b/backends/file.py
index b19bbfc..ff45c42 100644
--- a/backends/file.py
+++ b/backends/file.py
@@ -15,7 +15,7 @@ def _load(name,pos,file,obj):
 	for line in linegen(file):
 		split=line.split(',')
 		if split[pos]==name: return obj(*split)
-	raise Exception('No such',obj.__name__,'with identifier',name)
+	raise Exception(f'No such {obj.__name__} with identifier {name}')
 def _load_multi(name,pos,file,obj):
 	out=[]
 	for line in linegen(file):
@@ -62,7 +62,7 @@ def delete_invite(token):
 def linegen(path):
 	i=0
 	file=open(path)
-	line=file.readline()
+	line=file.readline().rstrip('\n') # Maybe sometimes there won't be one.
 	while line:
 		i+=1
 		response=yield line
@@ -91,7 +91,7 @@ def writefile(path,action,post=None):
 	while line:
 		i+=1
 		action(write,i,line)
-		line=file.readline()
+		line=file.readline().rstrip('\n')
 	if post is not None: post(write)
 	file.close()
 	write.close()
diff --git a/models.py b/models.py
index f64ca8b..92f2c36 100644
--- a/models.py
+++ b/models.py
@@ -24,12 +24,15 @@ class Token():
 		self.owner=owner
 	def revoke(self):
 		backend.delete_token(self)
+	@property
+	def serialise(self):
+		return ','.join([self.value,self.owner])
 
 @dataclass
 class InviteToken(Token):
 	_uses: int=0
 	_max_uses: int=-1
-	_expires: datetime=None
+	expires: datetime=None
 	def __init__(self,*args,**kwargs):
 		return super().__init__(*args,**kwargs)
 	@property
@@ -44,6 +47,9 @@ class InviteToken(Token):
 	def max_uses(self,val):
 		if -1<val<=self.uses: self.revoke()
 		self._max_uses=val
+	@property
+	def serialise(self):
+		return ','.join([self.value,self.owner,self.uses,self.max_uses,self.expires])
 
 @dataclass
 class AccessToken(Token):
@@ -55,14 +61,18 @@ class User(AbstractUser):
 	username: str
 	password_hash: str
 	salt: str
-	invited_by: AbstractUser=None # Root node will just reference itself
+	_invited_by: AbstractUser # Root node will just reference itself
+	@property
+	def invited_by(self):
+		if isinstance(self._invited_by,str): self._invited_by=backend.load_user(self._invited_by)
+		return self._invited_by
 	email: str=''
 	@property
 	def serialise(self):
 		return ','.join([self.username,self.password_hash,str(self.salt),self.invited_by.username,self.email])
 	def create_inv_token(self,*args,**kwargs):
 		tok=InviteToken(self,*args,**kwargs)
-		backend.save_token(tok)
+		backend.save_invite(tok)
 		return tok
 	def change_password(self,old_pw:str|None,new_pw:str): pass
 	def save(self):
@@ -72,7 +82,10 @@ class User(AbstractUser):
 	def login(cls,username:str,password:str):
 		u=backend.load_user(username)
 		if u is None: raise Exception("User doesn't exist")
-		if phash(password,u.salt)[0]==u.password_hash: return AccessToken(u)
+		if phash(password,u.salt)[0]==u.password_hash:
+			a=AccessToken(u)
+			backend.save_token(a)
+			return a
 		raise Exception("Incorrect password")
 	@classmethod
 	def register(cls,username:str,password:str,invite:InviteToken,email:str|None):