Error failing to run my app - pls help!

I am getting the below error when I run my app. I recently uninstalled 1.2 and reinstalled 1.3.
C:\Users\vangan\AppData\Local.meteor\packages\meteor-tool\1.3.4_4\mt-os.windows.x86_32\isopackets\ddp\npm\node_modules\meteor\promise\node_modules\meteor-promise
65
throw error;
^
TypeError: Not a string or buffer
at Hash.update (crypto.js:237:17)
at C:\tools\fs\watch.js:257:10
at sha1 (C:\tools\fs\watch.js:255:10)
at Builder.write (C:\tools\isobuild\builder.js:260:22)
at C:\tools\isobuild\bundler.js:2293:13
at C:\tools\isobuild\bundler.js:2279:7
at C:\tools\isobuild\bundler.js:2685:22
at C:\tools\utils\buildmessage.js:271:13
at [object Object].withValue (C:\tools\utils\fiber-helpers.js:89:14)
at C:\tools\utils\buildmessage.js:264:29
at [object Object].withValue (C:\tools\utils\fiber-helpers.js:89:14)
at C:\tools\utils\buildmessage.js:262:18
at [object Object].withValue (C:\tools\utils\fiber-helpers.js:89:14)
at C:\tools\utils\buildmessage.js:253:23
at [object Object].withValue (C:\tools\utils\fiber-helpers.js:89:14)
at Object.capture (C:\tools\utils\buildmessage.js:252:19)
at bundle (C:\tools\isobuild\bundler.js:2520:31)
at C:\tools\isobuild\bundler.js:2467:32
at Object.withCache (C:\tools\fs\files.js:1440:12)
at Object.exports.bundle (C:\tools\isobuild\bundler.js:2467:16)
at C:\tools\runners\run-app.js:591:36
at Function.run (C:\tools\tool-env\profile.js:489:12)
at bundleApp (C:\tools\runners\run-app.js:581:34)
at AppRunner._runOnce (C:\tools\runners\run-app.js:634:35)
at AppRunner._fiber (C:\tools\runners\run-app.js:887:28)
at C:\tools\runners\run-app.js:411:12

Hello~ I got this same problem with my Windows 10 PC :slight_smile:

same problem after update METEOR@1.3.4.4

the problem got fixed after I reinstall the meteor :slight_smile: