YAPI may display error E077 when you open Document Viewer. This error indicates that Adobe Acrobat Reader is not installed or changes to Adobe Reader settings are required. If you don’t have Adobe Reader installed, please navigate your browser to http://get.adobe.com/reader/, download it and install.

If you have Adobe Reader installed and you are still getting error E077, most likely you need to adjust Adobe Reader settings. Start Adobe Reader, click Edit top menu, and select Preferences. On Preferences window, select Internet category on the left. Make sure that ‘Display PDF in Browser” option is checked. Click Ok to close Preferences window

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