My lecture was just working and now it stopped. What do I do?

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The error that you experienced may be due to a pause or delay in your Internet connection. In normal circumstances, you should not experience this. If this problem occurs frequently, then you should verify the stability of your Internet connection by using our Speed Test. Your download speed should be 1000 kbps or higher (as mentioned in our System Requirements) on a constant basis. Your Internet connection's available bandwidth could be impacted by many factors, including Internet usage by other people on your home/office network, or usage in your neighborhood ISP (Internet Service Provider, i.e. Comcast, Verizon, etc.) bridge.


Once you have identified that your Internet connection is stable, playback may still have issues due to a corrupt web browser cache (files downloaded from a website that may be referenced on subsequent page visits). Therefore, you may need to clear your web browser cache before revisiting the lecture content. Since this task differs between web browsers, it is best to simply look-up the appropriate instructions for your web browser (i.e. Internet Explorer, Safari, Firefox, etc.):


Click here to find out how to clear your browser's cache.

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