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OpenX User Interface can be disabled in situations to prevent users from logging into the OpenX installation. In this situation the server only delivers banners and ads that are already created.

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However, OpenX User Interface could be disabled by mistake and after that login will not be possible. The only way to re-enable OpenX User Interface will be possible by editing a configuration file.

*How to re-enable OpenX User Interface

1) Go to '\var' folder in your OpenX installation

Domain names are consist of parts separated with dots. They are:

Top-Level Domain name or TLD
Second-Level Domain name or SLD

TLD name has the last position in domain. For example, in feminaportal.com, .com is top-level domain name and feminaportal is second-level domain name. What makes your domain name unique and recognizable is SLD; in our example it is feminaportal.

One of the most common question Apache users ask themselves is:

Where is located Apache error log? or What is Apache error log location?

So, here is the answer:

error_log file is by default locate in /etc/httpd/logs/ folder, full path is /etc/httpd/logs/error_log

If you need to develop and test application on Eclipse for Android v4.x you could encounter a problem with virtual machine starting followed with some of messages below:

Unable to find a 'userdata.img' file for ABI armeabi to copy into the AVD folder.

or

ERROR: This AVD's configuration is missing a kernel file

It means that you do not have installed Android v4 system image.

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After upgrading Eclipse Helios to Indigo described in our article here, Android development platform should be upgraded, too. Otherwise, and error message will appear informing you that Android platform version is not valid.

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How to upgrade Android platform on Eclipse

1) Window > Android SDK Manager

2) Android SDK Manger will perform checking for new updates