Summary

In previous versions of Laserfiche, the Laserfiche Server could stop responding when generating thumbnails for certain images. Laserfiche 7.2.1 included a workaround for this issue. However, the workaround could result in low-resolution thumbnails for certain images.

Resolution

There is a hotfix available for Laserfiche Server 7.2.1. The fix is an updated version of LFEng.dll (version 7.2.1.410). This hotfix includes the fix released with Laserfiche 7.2.1 that will prevent the Laserfiche Server from becoming unresponsive. In addition, Laserfiche will no longer generate low-resolution thumbnail images.

Important: LFEng.dll (version 7.2.1.410) also contains a fix for a separate issue. The fix for this separate issue requires changes to the table structure of your SQL database. While these table changes are not related to this thumbnail generation issue, you must apply the changes if you decide to upgrade to LFEng.dll (version 7.2.1.410). Please see Knowledge Base article 1011713 for more information.

To update Laserfiche Server 7.2.1

1. Stop the Laserfiche Server service.
   1. Click Start and click Control Panel.
   2. Double-click Administrative Tools.
   3. Double-click Services.
   4. Scroll down and select Laserfiche Server 7.2.
   5. From the Action menu, click Stop.
2. Click the following link to download a zip file containing the hotfix.
   Hotfix_SCR28805.zip
3. Extract the contents of the archive to a temporary location.
4. Replace the existing version of LFEng.dll located in your Laserfiche Server installation folder with the version included in the zip file. By default, the Laserfiche Server is installed at "C:\Program Files\Laserfiche\Server."
5. Perform one of the following:
   • Microsoft SQL Server: Run the 28581.sql script on your database.
     1. Click Start and then click Run.
     2. In the Run dialog box, type the following and click OK to run the script.

        osql -E -S SQLInstance -d DatabaseName -i PathToScript.

        SQLInstance is the name of your SQL server.

        DatabaseName is the name of the SQL database associated with your Laserfiche repository.

        PathToScript is the full path (including the file name and extension) to the extracted 28521.sql file.

   • Oracle: Run the LFS_body.sql and LFS_spec.sql scripts.
     1. Click Start and then click Run.
     2. In the Run dialog box, type the following and click OK to load a command prompt.

        cmd

     3. Browse to the temporary location where you extracted the contents of the downloaded zip file.
     4. Type the following and press ENTER to run SQL*Plus.

        sqlplus UserName/Password@SchemaName

     5. In the resulting prompt, type the following:

        @LFS_spec.sql

     6. Repeat the above steps with LFS_body.sql.

        Note: You must apply LFS_spec.sql first prior to applying LFS_body.sql.

6. Restart the Laserfiche Server service.
   1. Click Start and click Control Panel.
   2. Double-click Administrative Tools.
   3. Double-click Services.
   4. Scroll down and select Laserfiche Server 7.2.
   5. From the Action menu, click Restart.
7. If you configured Laserfiche Server to generate low-resolution thumbnails, please see Knowledge Base article 1011689 and follow the instructions on how to disable low-resolution thumbnail generation.

Related Links

Please see the following Knowledge Base article for information on another hotfix included in LFEng.dll (version 7.2.1.410).

1011713 Unauthorized Users May Be Able to See Through Redactions By Copying a Page from the Redacted Document to Another Document on Which They are Able to See Through Redactions.

Please see the following Knowledge Base article for information on the workaround included with Laserfiche 7.2.1 on preventing the Laserfiche Server from becoming unresponsive during thumbnail generation.

1011689 The Laserfiche Server Stops Responding During Thumbnail Generation.