ERROR: Detection of invalid Refresh Rate [18535]

This article is currently being updated by our staff.

This article applies to:

E-Prime 3.0
E-Prime 2.0

 

This item was introduced in E-Prime 2.0 (2.0.10.174).

 

Symptoms
Recent versions of E-Prime display the following error at runtime to prevent you from losing data:

 

Unable to obtain a valid refresh rate.

Please ensure your display adapter is configured with the most recent and device specific adapter.

 

 

Detail

When a display adapter does not accurately report a valid refresh rate, calculations in E-Prime can be misrepresented and cause timing errors.

 

Solution 

To resolve the problem and prevent the error, please set your computer to use the native driver of the video card instead of the Standard Display Driver. You can try Windows Update or the video card manufacturer's website to find the driver.

NOTE: This error often occurs when running on a virtual machine or through virtualization software such as Parallels. E-Prime is supported on native Windows installations only.

E-Prime 2.0.10.182+ and E-Prime 3.0 include an option to ignore the error for spot-testing purposes. Open the Experiment Object at the top of the Structure, go to the Devices tab, double-click the Display device, and set the "Throw error if invalid refresh rate" property to No.

 

In E-Prime 2.0.8.90(a), setting the "Match desktop resolution at runtime" property to Yes may resolve the error in some environments. PST recommends this option only for spot-testing purposes.

 
 

See Also:
ERROR: Microsoft Basic Display Adapter not recommended warning [25496]

Legacy End User Comments

Ming Hsu 3/24/2012 19:34	Is it possible to turn off this warning? This error enforces that no development can be done on Vista or virtual machines. It seems rather unnecessary and treats the users like idiots who don't know what they're doing. At least give us an option to turn it into a warning!
Jacob E. Cheadle 9/10/2012 9:08	There should be a toggle for this feature. Many of us develop our scripts on a Mac with software like Parallels and we're now crippled. I would characterize this as shoddy design that shouldn't have to hurt end-users, but does.
Brandon Cernicky 9/10/2012 15:23	Check Experiment Object / Devices / Display. There is the ability to change the range and to have or not have an error. This toggle was introduced for the specific reasons above.

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