Cannot double-watch

[cldwalker]

From LightTable/LightTable#1231:

I'd expect to be able to see the value of the reduce and the map.

Here's the console.

Invalid behavior: :lt.plugins.clojure.instarepl/on-eval-sonar
TypeError: Cannot read property 'from' of undefined
    at lt.plugins.watches.watched_range (file:///Applications/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/lighttable/bootstrap.js:31016:270)
    at Function.__BEH__on_eval_sonar (/Applications/LightTable/LightTable.app/Contents/Resources/app.nw/plugins/clojure/clojure_compiled.js:1155:273)
    at c (file:///Applications/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/lighttable/bootstrap.js:6196:14)
    at a (file:///Applications/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/lighttable/bootstrap.js:6236:18)
    at lt.object.raise_STAR_ (file:///Applications/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/lighttable/bootstrap.js:20513:74)
    at a (file:///Applications/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/lighttable/bootstrap.js:20546:34)
    at b (file:///Applications/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/lighttable/bootstrap.js:20550:14)
    at Function.__BEH__on_eval_one (/Applications/LightTable/LightTable.app/Contents/Resources/app.nw/plugins/clojure/clojure_compiled.js:1159:110)
    at c (file:///Applications/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/lighttable/bootstrap.js:6196:14)
    at a (file:///Applications/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/lighttable/bootstrap.js:6236:18)