problem in file uploading

problem in file uploading

while uploading file into quotes module i am getting the following error.

https://crm.zoho.com/crm/private/xml/Quotes/uploadFile?authtoken=".$authtoken."&scope=crmapi

file path : http://creatorexport.zoho.com/DownloadFile.do?filepath=/1355384663709_theater-in-the-round.jpg&sharedBy=adithya1&appLinkName=ibanquet-lab&viewLinkName=room_templates_View

< response uri = "/crm/private/xml/Leads/uploadFile" >

 <error><code>
      4424
     
</code>
<message>
      Unable to process your request. Please verify whether you have provided proper file.
     
</message>
 </error>

</ response >

if any help would be appreciated