Upgrade to Sencha Cmd 5 first required?

I'll post a bug in the Bugs forum if I have to, but I'm wondering if I'm supposed to upgrade to Sencha Cmd 5 first before attempting to upgrade to Ext JS 5. I'm currently on Sencha Cmd 4.0.2.67, and I initially tried to upgrade to Ext JS 5 using that version but it failed. I rolled everything back and then tried to upgrade to Sencha Cmd 5, but this isn't working either.

Code:

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Mozart:lp paulb$ sencha app upgrade -nof

Sencha Cmd v5.0.0.116

[INF] upgrading application

[INF] Upgrading to sdk at /Users/paulb/Projects/BlueSage/LendingPlatform/web-app/ext

[INF] Updating application and workspace from Ext JS 4.2.2.1144 / Cmd 4.0.2.67

[ERR]

[ERR] BUILD FAILED

[ERR] com.sencha.command.environment.IncompatibleException: Sencha Cmd version (5.0.0.116) is incompatible with required version (3.1.0.206-3.1.3.372)

[ERR]

[ERR] Total time: 2 seconds

[ERR] com.sencha.command.environment.IncompatibleException: Sencha Cmd version (5.0.0.116) is incompatible with required version (3.1.0.206-3.1.3.372)

[ERR]

The application was last modified by an older version of Sencha Cmd (4.0.2.67)

the current is 5.0.0.116.

Please run "sencha app upgrade" to update to 5.0.0.116.

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