Package Problems upgrading to Meteor 1.2, cannot start server now - meteor

Question

I just upgraded to Meteor 1.2 from 1.1.
It did not upgrade and this is what it output
MacBook-Pro:ProjectX Nearpoint$ meteor update
Update to release METEOR#1.2.0.1 is impossible:
While selecting package versions:
error: Conflict: Constraint less#1.0.11 is not satisfied by less 2.5.0_2.
Constraints on package "less":
* less#=2.5.0_2 <- top level
* less#1.0.11 <- multiply:iron-router-progress 1.0.1
* less#1.0.0||2.0.0 <- matteodem:easy-search 1.6.3
* less#1.0.0||2.0.0 <- mdg:camera 1.1.5
This project is at the latest release which is compatible with your current package constraints.
npm-container: updating npm dependencies -- beagle, validator, async...
Changes to your project's package version selections from updating package versions:
cfs:http-methods upgraded from 0.0.29 to 0.0.30
ian:accounts-ui-bootstrap-3 upgraded from 1.2.79 to 1.2.80
matteodem:easy-search upgraded from 1.6.3 to 1.6.4
meteorhacks:kadira upgraded from 2.23.2 to 2.23.4
The following top-level dependencies were not updated to the very latest version available:
* kevohagan:sweetalert 0.5.0 (1.0.0 is available)
* mdg:camera 1.1.5 (1.2.0 is available)
* natestrauser:filepicker-plus 1.2.3 (2.0.0 is available)
* natestrauser:select2 3.5.1 (4.0.0_1 is available)
* zimme:iron-router-active 1.0.4 (2.0.1 is available)
Newer versions of the following indirect dependencies are available:
* babrahams:editable-json 0.4.3 (0.6.0 is available)
* matb33:collection-hooks 0.7.15 (0.8.0 is available)
* meteorhacks:aggregate 1.2.1 (1.3.0 is available)
* meteortoys:hotreload 0.2.0 (0.3.0 is available)
* meteortoys:listen 0.3.0 (0.4.0 is available)
* meteortoys:pub 0.3.1 (0.4.0 is available)
* meteortoys:status 0.1.0 (0.2.0 is available)
* meteortoys:toypro 0.4.2 (0.5.0 is available)
* softwarerero:accounts-t9n 1.0.9 (1.1.4 is available)
* tap:i18n 1.5.1 (1.6.1 is available)
* underscorestring:underscore.string 3.0.3_1 (3.2.2 is available)
To update one or more of these packages, pass their names to `meteor update`.
What should I do to fix this now? I currently cannot start my server after upgrading.
I am getting the error
=> Started proxy.
=> Started MongoDB.
=> Errors prevented startup:
While selecting package versions:
error: Potentially incompatible change required to top-level dependency: matteodem:easy-search 1.6.3,
was 1.6.4.
Constraints on package "matteodem:easy-search":
To allow potentially incompatible changes to top-level dependencies, you must pass
--allow-incompatible-update on the command line.
=> Your application has errors. Waiting for file change.