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Development Problems

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Development Problems

This topic introduces the different types of development problems you could run into when developing Logi Studio, as well as possible solutions.

Problems exporting to PDF, Excel, and Microsoft Word:

  • PDF - Developers must give users the ability to export a report manually or instruct the server to automatically export a report. Manual exports are configured within Report definitions and automated exports are configured within Process definitions. If any elements in a definition have duplicate element IDs or their IDs are not set, they must be uniquely identified for the export to work.
  • Excel - If error messages are received during the export process, remove any changes that have been applied recently to the report. If the error messages persist, the page may have been cached. You may need to terminate the current session and/or restart your web server to clear it.
  • Microsoft Word - Ensure that the Target.Export element's Report Definition File attribute does not have a value of "Current Report." This value causes the Request parameters not to be passed to the export.

Problems Running Queries on the Web Server:

  • Application is not found
    Using the management tool supplied with your web server, confirm that the application is registered with it, and that its virtual directory exists. If using .NET, ensure that the Application name exists and that the ASP.NET setting is correct in the virtual directory properties.
  • Cannot connect to the database
    Native Connection elements (Connection.MySQL, Connection.Oracle, etc.) provide optimized connections to their databases. However, if you're using a connection with a Connection String that you entered manually, be sure it's valid, without misspellings or missing information. Ensure that the password is being saved with the string. Information about connection strings for a variety of databases can be found online. If you must use Windows integrated authentication with the database, the ASP.NET account must be given access to the database or .NET impersonation must be used on the developed reports.

  • Query Builder or Database Browser connects to data OK but my report does not
    This strange-seeming circumstance comes about because the Query Builder and Database Browser tools connect directly from your development PC to the datasource, whereas, when you preview or browser your application, your report is connecting through the web server and Logi Server Engine. When the Query Builder or the Database Browser connects but the report does not, the problem is often that the account used by the web server to run your Logi report (by default in .NET: the Application Pool account, ASPNET, or NETWORK service) does not have permission to access the datasource.

Problems Running the Wizards:

  • Wizards won't run
    For the wizards to run properly, security should not be enabled in the _Settings definition for your reports. Before running the wizards, resolve any errors received while browsing or previewing the reports in a web browser. Web server-to-datasource connection configuration errors may prevent the wizards from running properly. Elements affected by wizards, such as "Add Data Table Columns", will not work correctly if the element is missing its required, unique element ID.

Problem Saving Logi Application:

  • Insufficient Disk Space
    The user must have enough disk space to save files on the system. Files must not be set to "Read Only" in order for them to be overwritten; check their properties in the file system.

Problems Running the Debugger:

  • Debug link or icon doesn't work
    Changes to the _Settings definition, like turning on debugging, may require a new browser session. Confirm that a new browser window is being launched to test this. The _Settings definition Debugger Style attribute value must be "DebuggerLinks"; the value is case-sensitive and should be one word.

Problems With Logon From Non-Standard Logon Form:

  • The standard Logi logon page, rdLogon.aspx, passes the login name and password form variables and also a hidden form variable called "rdFormLogon" set equal to True. The latter variable should also be passed to the report if the username and password are being submitted from any other report definition or form.

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