I uninstall appium, and installed 1.6.4 beta, but I am still getting that error.
Here is some of the console log from appium 1.6.4:
testFindElement(com.saucelabs.appium.UICatalogTest)
testSize(com.saucelabs.appium.UICatalogTest): Unable to create new remote session. desired capabilities = Capabilities [{app=/Users/ptraynor/Desktop/sample-code-master/sample-code/examples/java/junit/../../../apps/UICatalog/build/release-iphonesimulator/UICatalog.app, platformVersion=9.3, automationName=XCUITest, platformName=iOS, deviceName=iPhone 6}], required capabilities = Capabilities [{}](..)
testSize(com.saucelabs.appium.UICatalogTest)
testScreenshot(com.saucelabs.appium.UICatalogTest): Unable to create new remote session. desired capabilities = Capabilities [{app=/Users/ptraynor/Desktop/sample-code-master/sample-code/examples/java/junit/../../../apps/UICatalog/build/release-iphonesimulator/UICatalog.app, platformVersion=9.3, automationName=XCUITest, platformName=iOS, deviceName=iPhone 6}], required capabilities = Capabilities [{}](..)
testScreenshot(com.saucelabs.appium.UICatalogTest)
testAlertInteraction(com.saucelabs.appium.UICatalogTest): Unable to create new remote session. desired capabilities = Capabilities [{app=/Users/ptraynor/Desktop/sample-code-master/sample-code/examples/java/junit/../../../apps/UICatalog/build/release-iphonesimulator/UICatalog.app, platformVersion=9.3, automationName=XCUITest, platformName=iOS, deviceName=iPhone 6}], required capabilities = Capabilities [{}](..)
testAlertInteraction(com.saucelabs.appium.UICatalogTest)
test_location(com.saucelabs.appium.UICatalogTest): Unable to create new remote session. desired capabilities = Capabilities [{app=/Users/ptraynor/Desktop/sample-code-master/sample-code/examples/java/junit/../../../apps/UICatalog/build/release-iphonesimulator/UICatalog.app, platformVersion=9.3, automationName=XCUITest, platformName=iOS, deviceName=iPhone 6}], required capabilities = Capabilities [{}](..)
test_location(com.saucelabs.appium.UICatalogTest)
testScroll(com.saucelabs.appium.UICatalogTest): Unable to create new remote session. desired capabilities = Capabilities [{app=/Users/ptraynor/Desktop/sample-code-master/sample-code/examples/java/junit/../../../apps/UICatalog/build/release-iphonesimulator/UICatalog.app, platformVersion=9.3, automationName=XCUITest, platformName=iOS, deviceName=iPhone 6}], required capabilities = Capabilities [{}](..)
testScroll(com.saucelabs.appium.UICatalogTest)
testSlider(com.saucelabs.appium.UICatalogTest): Unable to create new remote session. desired capabilities = Capabilities [{app=/Users/ptraynor/Desktop/sample-code-master/sample-code/examples/java/junit/../../../apps/UICatalog/build/release-iphonesimulator/UICatalog.app, platformVersion=9.3, automationName=XCUITest, platformName=iOS, deviceName=iPhone 6}], required capabilities = Capabilities [{}](..)
testSlider(com.saucelabs.appium.UICatalogTest)
testSource(com.saucelabs.appium.UICatalogTest): Unable to create new remote session. desired capabilities = Capabilities [{app=/Users/ptraynor/Desktop/sample-code-master/sample-code/examples/java/junit/../../../apps/UICatalog/build/release-iphonesimulator/UICatalog.app, platformVersion=9.3, automationName=XCUITest, platformName=iOS, deviceName=iPhone 6}], required capabilities = Capabilities [{}](..)
testSource(com.saucelabs.appium.UICatalogTest)
testSessions(com.saucelabs.appium.UICatalogTest): Unable to create new remote session. desired capabilities = Capabilities [{app=/Users/ptraynor/Desktop/sample-code-master/sample-code/examples/java/junit/../../../apps/UICatalog/build/release-iphonesimulator/UICatalog.app, platformVersion=9.3, automationName=XCUITest, platformName=iOS, deviceName=iPhone 6}], required capabilities = Capabilities [{}](..)
testSessions(com.saucelabs.appium.UICatalogTest)
Tests run: 124, Failures: 0, Errors: 124, Skipped: 0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:21 min
[INFO] Finished at: 2017-03-29T12:45:03-07:00
[INFO] Final Memory: 10M/245M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.12.4:test (default-test) on project sauce_appium_junit: There are test failures.
[ERROR]
[ERROR] Please refer to /Users/ptraynor/Desktop/sample-code-master/sample-code/examples/java/junit/target/surefire-reports for the individual test results.
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException