FIX: You may receive an InvalidCastException error in an ASP.NET-connected Web application (915782)
The information in this article applies to:
- Microsoft .NET Framework 2.0
SYMPTOMSYou may receive an InvalidCastException error in a Microsoft
ASP.NET-connected Web application when the following conditions are true:
- The Web application uses a master page, a user control, or
pages that reference each other.
- The master page, the user control, or the pages are batch
compiled into a single assembly.
- One of the batched dependencies is changed and causes a
recompilation.
- A dynamic call to load a reference is made, such as a call
to the LoadControl method.
In this case, you may receive an error message that resembles the following: Unable to cast object of type 'ASP.type'
to type 'ASP.type'. Note
In this error message, type is a placeholder for one of the batch compiled
types. You may also receive an error message that resembles the following: Could not load file or assembly 'App_Web_xxxxxxxx, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
RESOLUTIONA supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft .NET Framework 2.0 service pack that contains this hotfix. To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site: Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question. The English
version of this hotfix has the file attributes (or later file attributes) that
are listed in the following table. The dates and times for these files are
listed in Coordinated Universal Time (UTC). When you view the file information,
it is converted to local time. To find the difference between UTC and local
time, use the Time Zone tab in the Date and Time tool in
Control Panel. |
| Aspnet_wp.exe | 2.0.50727.80 | 23,040 | 28-Feb-2006 | 12:06 | | System.web.dll | 2.0.50727.80 | 5,025,792 | 28-Feb-2006 | 12:06 | | Webengine.dll | 2.0.50727.80 | 299,520 | 28-Feb-2006 | 12:06 |
STATUSMicrosoft
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section.
| Modification Type: | Minor | Last Reviewed: | 8/16/2006 |
|---|
| Keywords: | kbQFE kbfix kbbug kbpubtypekc KB915782 kbAudDeveloper kbAudITPRO |
|---|
|