solo.clickOnWebElement(By.xpath("")) is not working

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I'm using robotium-solo-5.4.1.jar for testing my Cordova app. 
And when I tried solo.clickOnWebElement(By.xpath("myxpath")), it didn't work. 
Anyway, if "myxpath" is wrong, then it's throwing error. So, "myxpath" is the 
correct one. 
Is this a known issue ?
Please do let me know for any further info required.

Original issue reported on code.google.com by senthil5...@gmail.com on 29 Jul 2015 at 1:10