Soap Exception!!!

I have a windows application which calls a web service for changing data and both are written in C#.

It have been under developement for 2 years and it is about to be released recently. However, it sendly Suddenly occured an error. The error message is below:

System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.FormatException: Input string was not in a correct format.
   at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
   at System.Int32.Parse(String s)
   at EMSWS.UserWS.IsTicketValid(String ticket) in d:\ems\emsws\userws.asmx.cs:line 290
   at EMSWS.UserWS.GetUserInfo(String ticket) in d:\ems\emsws\userws.asmx.cs:line 82
   --- End of inner exception stack trace ---

Dear experts, please help.
LVL 3
bvwangAsked:
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boy8964Connect With a Mentor Commented:
most likely it is a database issue. make sure your database is runing and can be connected by web service and try again.
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sabeeshCommented:
all the methods in webservice should be in serializable format
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redpipeConnect With a Mentor Commented:
I might be really missing the point here, but as fare as I can see the "only" problem is that the received value can not be parsed as an Int32. Please check the object you try to use in your webservice, and check if it is really parseable as an integer.
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bvwangAuthor Commented:
thanks for respons. the bug has bee fixed and i have released it on http://www.ialda.com
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