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Re: class file has wrong version 52.0
Check your java version (on both the laptop and roboRIO) - if WPILib was compiled with a different version than you deployed to your roboRIO or have on your laptop, it can cause issues. Usually I see this (doing other projects) when trying to run a jar and getting a "wrong major/minor version" error.
I believe the numbers correspond to java versions as:
J2SE 8 = 52
J2SE 7 = 51
J2SE 6.0 = 50
J2SE 5.0 = 49
JDK 1.4 = 48
JDK 1.3 = 47
JDK 1.2 = 46
JDK 1.1 = 45
Which would mean it was built on Java 8, but you're trying to run it on Java 6.
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2007 - Present: Mentor, 2177 The Robettes
LRI: North Star 2012-2016; Lake Superior 2013-2014; MN State Tournament 2013-2014, 2016; Galileo 2016; Iowa 2017
2015: North Star Regional Volunteer of the Year
2016: Lake Superior WFFA
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