Summary
By default, WebLink 8 always writes log file information to "C:\temp\WebLink Log." WebLink may not function properly if this path does not exist or if WebLink cannot write to that path. For example, the Document Viewer may not display images properly.
More Information
Manually edit login.aspx to modify the log file path.
To modify the LogPath property of the LoginInterface8 control
<weblink:logininterface8 id="TheLoginInterface" style="Z-INDEX: 105" runat="server" ShowRepositoryDropdown="True" ShowRepositoryBox="True" ShowServerBox="True" ShowUsernameBox="True">
<weblink:logininterface8 id="TheLoginInterface" style="Z-INDEX: 105" runat="server" ShowRepositoryDropdown="True" ShowRepositoryBox="True" ShowServerbox="True" ShowUsernameBox="True" LogPath="D:\MyTempFolder">
Replace D:\MyTempFolder with a valid path of your choosing.