水晶报表问题

[taotaobujue]

我从微软网站上下了一个.net framework2.0安装上了，可是水晶报表在网页中无法显示。（在升级之前正常。）错误为：
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: CrystalDecisions.CrystalReports.Engine.DataSourceException: 查询引擎错误：“C:\WINDOWS\TEMP\temp_fe538505-d82a-49fb-834a-c8eee292a3e8.rpt”
请高手解决！谢谢！