I was using build 888 and exported Categories.raven dump file from a tenant called Category - then tried to import into a new tenant called test.
And here is the full stack trace:-
D:\RavenDB\RavenDB-Build-888\Smuggler>Raven.Smuggler in
http://localhost Categor
ies.Raven --database=test
System.InvalidOperationException: Could not parse json:
<html>
<head>
<title>A potentially dangerous Request.Path value was detected from the
client (:).</title>
<style>
body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:bl
ack;}
p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5p
x}
b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px}
H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red
}
H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maro
on }
pre {font-family:"Lucida Console";font-size: .9em}
.marker {font-weight: bold; color: black;text-decoration: none;}
.version {color: gray;}
.error {margin-bottom: 10px;}
.expandable { text-decoration:underline; font-weight:bold; color:navy;
cursor:hand; }
</style>
</head>
<body bgcolor="white">
<span><H1>Server Error in '/' Application.<hr width=100% size=1 colo
r=silver></H1>
<h2> <i>A potentially dangerous Request.Path value was detected from
the client (:).</i> </h2></span>
<font face="Arial, Helvetica, Geneva, SunSans-Regular, sans-serif ">
<b> Description: </b>An unhandled exception occurred during the exec
ution of the current web request. Please review the stack trace for more informa
tion about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Web.HttpException: A potentially d
angerous Request.Path value was detected from the client (:).<br><br>
<b>Source Error:</b> <br><br>
<table width=100% bgcolor="#ffffcc">
<tr>
<td>
<code>
An unhandled exception was generated during the execution of the current web req
uest. Information regarding the origin and location of the exception can be iden
tified using the exception stack trace below.</code>
</td>
</tr>
</table>
<br>
<b>Stack Trace:</b> <br><br>
<table width=100% bgcolor="#ffffcc">
<tr>
<td>
<code><pre>
[HttpException (0x80004005): A potentially dangerous Request.Path value was dete
cted from the client (:).]
System.Web.HttpRequest.ValidateInputIfRequiredByConfig() +11494187
System.Web.PipelineStepManager.ValidateHelper(HttpContext context) +184
</pre></code>
</td>
</tr>
</table>
<br>
<hr width=100% size=1 color=silver>
<b>Version Information:</b> Microsoft .NET Framework Version:4.
0.30319;
ASP.NET Version:4.0.30319.272
</font>
</body>
</html>
<!--
[HttpException]: A potentially dangerous Request.Path value was detected from th
e client (:).
at System.Web.HttpRequest.ValidateInputIfRequiredByConfig()
at System.Web.HttpApplication.PipelineStepManager.ValidateHelper(HttpContext
context)
--> ---> Newtonsoft.Json.JsonReaderException: Unexpected character encountered w
hile parsing value: <. Line 0, position 0.
at Newtonsoft.Json.JsonTextReader.ParseValue() in d:\Development\Releases\Jso
n\Working\Src\Newtonsoft.Json\JsonTextReader.cs:line 1117
at Newtonsoft.Json.JsonTextReader.ReadInternal() in d:\Development\Releases\J
son\Working\Src\Newtonsoft.Json\JsonTextReader.cs:line 557
at Raven.Json.Linq.RavenJObject.Load(JsonReader reader) in c:\Builds\RavenDB-
Stable\Raven.Abstractions\Json\Linq\RavenJObject.cs:line 149
at Raven.Json.Linq.RavenJObject.Parse(String json) in c:\Builds\RavenDB-Stabl
e\Raven.Abstractions\Json\Linq\RavenJObject.cs:line 232
--- End of inner exception stack trace ---
at Raven.Json.Linq.RavenJObject.Parse(String json) in c:\Builds\RavenDB-Stabl
e\Raven.Abstractions\Json\Linq\RavenJObject.cs:line 238
at Raven.Abstractions.Connection.HttpRavenRequest.SendRequestToServer(Action`
1 action) in c:\Builds\RavenDB-Stable\Raven.Abstractions\Connection\HttpRavenReq
uest.cs:line 183
at Raven.Abstractions.Connection.HttpRavenRequest.ExecuteRequest() in c:\Buil
ds\RavenDB-Stable\Raven.Abstractions\Connection\HttpRavenRequest.cs:line 153
at Raven.Smuggler.SmugglerApi.EnsureDatabaseExists() in c:\Builds\RavenDB-Sta
ble\Raven.Smuggler\SmugglerApi.cs:line 372
at Raven.Smuggler.SmugglerApi.ImportData(Stream stream, SmugglerOptions optio
ns) in c:\Builds\RavenDB-Stable\Raven.Smuggler\SmugglerApi.cs:line 183
at Raven.Smuggler.SmugglerApi.ImportData(SmugglerOptions options) in c:\Build
s\RavenDB-Stable\Raven.Smuggler\SmugglerApi.cs:line 177
at Raven.Smuggler.Program.Parse(String[] args) in c:\Builds\RavenDB-Stable\Ra
ven.Smuggler\Program.cs:line 110
D:\RavenDB\RavenDB-Build-888\Smuggler>