Solution 1.
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Please upgrade your Evaer to the most recent version(2.0.7.31) from the link https://www.evaer.com/EvaerSetup.exe and please enable the "Capture from Audio Devices" option at Evaer menu Tools > Options > Audio settings tab as below image shows to have the issue fixed.
Upgrade link is http://www.evaer.com/upgrade.htm
<img src="https://www.evaer.com/faq/images/capture-sound-from-audio-device.png" alt="" width="439" height="532" />
If the issue still exist, please temporarily turn off your Anti-virus software, the Anti-virus may get a false positive detection on latest Evaer. Then restart Skype and Evaer to have a test.
Solution 2.
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Please enable the option "Capture directly from Skype" option at Evaer menu Tools > Options > Audio settings tab. Then restart Evaer and Skype, and please make sure your Evaer change to "Ready" status before your place the Skype call.
<img src="http://www.evaer.com/faq/images/ready_1.png" alt="Evaer video call recorder is Ready" width="437" height="105" />
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