What may be the cause of the following:
After the initial install, the link localhost:8080/ThingWorx only shows the front page of the Composer (index.html), but doesn't come even to the authentication.
The browser reports this error:
Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3; MS-RTC LM 8)
Timestamp: Thu, 4 Sep 2014 02:18:37 UTC
Message: Expected identifier, string or number
Message: Object expected
Thingworx.war - from Thingworx_Platform_188.8.131.52.SP2
browser: IE 8.0
ThingWorx does not support IE8 at design time, only runtime (this information is available from the System Requirements document on the Downloads page). As such, you won't be able to access Composer using IE8. You'll need to upgrade to at least IE9 or better yet, switch to another browser entirely.