I'm also getting this error, with same spec Windows but with Java 7. 
Unfortunately, I also get this with lein 1.7.1. Tried to build from source, 
but "lein install" generates a snapshot jar that only includes a few source 
files. Can anyone offer a solution to building your own lein?

Thanks,
Adrian

On Sunday, April 15, 2012 4:05:08 PM UTC-4, Niels wrote:
>
> lein new error under Windows 7 x64:
>
> >lein version
> Leiningen 2.0.0-preview3 on Java 1.6.0_31 Java HotSpot(TM) 64-Bit Server VM
>
> >lein new quiltest
> Generating a project called quiltest based on the 'default' template.
> java.lang.IllegalArgumentException: No implementation of method: 
> :make-reader of
>  protocol: #'clojure.java.io/IOFactory found for class: nil
>         at clojure.core$_cache_protocol_fn.invoke(core_deftype.clj:495)
>         at clojure.java.io$fn__7795$G__7790__7802.invoke(io.clj:63)
>         at clojure.java.io$reader.doInvoke(io.clj:96)
>         at clojure.lang.RestFn.invoke(RestFn.java:410)
>         at leiningen.new.templates$slurp_resource.invoke(templates.clj:29)
>         at 
> leiningen.new.templates$renderer$fn__713.doInvoke(templates.clj:79)
>         at clojure.lang.RestFn.invoke(RestFn.java:423)
>         at leiningen.new.default$default.invoke(default.clj:15)
>         at clojure.lang.Var.invoke(Var.java:401)
>         at clojure.lang.AFn.applyToHelper(AFn.java:161)
>         at clojure.lang.Var.applyTo(Var.java:518)
>         at clojure.core$apply.invoke(core.clj:602)
>         at leiningen.new$create.doInvoke(new.clj:54)
>         at clojure.lang.RestFn.invoke(RestFn.java:425)
>         at leiningen.new$create.invoke(new.clj:47)
>         at clojure.lang.AFn.applyToHelper(AFn.java:161)
>         at clojure.lang.RestFn.applyTo(RestFn.java:132)
>         at clojure.core$apply.invoke(core.clj:600)
>         at leiningen.new$new.doInvoke(new.clj:101)
>         at clojure.lang.RestFn.invoke(RestFn.java:421)
>         at clojure.lang.Var.invoke(Var.java:405)
>         at clojure.lang.AFn.applyToHelper(AFn.java:163)
>         at clojure.lang.Var.applyTo(Var.java:518)
>         at clojure.core$apply.invoke(core.clj:602)
>         at leiningen.core.main$resolve_task$fn__699.doInvoke(main.clj:66)
>         at clojure.lang.RestFn.applyTo(RestFn.java:139)
>         at clojure.lang.AFunction$1.doInvoke(AFunction.java:29)
>         at clojure.lang.RestFn.applyTo(RestFn.java:137)
>         at clojure.core$apply.invoke(core.clj:602)
>         at leiningen.core.main$apply_task.invoke(main.clj:88)
>         at leiningen.core.main$_main$fn__731.invoke(main.clj:140)
>         at leiningen.core.main$_main.doInvoke(main.clj:140)
>         at clojure.lang.RestFn.invoke(RestFn.java:421)
>         at clojure.lang.Var.invoke(Var.java:405)
>         at clojure.lang.AFn.applyToHelper(AFn.java:163)
>         at clojure.lang.Var.applyTo(Var.java:518)
>         at clojure.core$apply.invoke(core.clj:600)
>         at clojure.main$main_opt.invoke(main.clj:323)
>         at clojure.main$main.doInvoke(main.clj:426)
>         at clojure.lang.RestFn.invoke(RestFn.java:457)
>         at clojure.lang.Var.invoke(Var.java:413)
>         at clojure.lang.AFn.applyToHelper(AFn.java:172)
>         at clojure.lang.Var.applyTo(Var.java:518)
>         at clojure.main.main(main.java:37)
>
> Op donderdag 12 april 2012 19:39:28 UTC+2 schreef Phil Hagelberg het 
> volgende:
>>
>>
>> Hello folks.
>>
>> I'm happy to announce the release of the third preview of Leiningen 2.0.0.
>>
>> Highlights include the ability to show a full dependency tree a la "mvn
>> dependency:tree", a host of repl improvements, better offline support,
>> and the ability to load "lein new" templates on-demand.
>>
>> * Add HTTP nREPL support for repl task via :connect option. (Chas Emerick,
>>   Phil Hagelberg)
>> * Improve repl startup time, output consistency, Windows support. (Lee 
>> Hinman,
>>   Colin Jones)
>> * Stop using numeric exit codes for task failures.
>> * Dynamically resolve unknown templates in new task.
>> * Automatically activate offline profile when needed.
>> * Honor $http_proxy environment variable. (Juergen Hoetzel)
>> * Allow arbitrary :filespecs to be included in jars.
>> * Let custom :prep-tasks be specified in project.clj.
>> * Include :java-source-paths and dev/test deps in pom. (Nelson Morris)
>> * Add offline profile.
>> * Prevent project JVMs from outlasting Leiningen's process. (Colin Jones)
>> * Update lein.bat to work with version 2. (Andrew Kondratovich)
>> * Show a dependency tree in deps task. (Chas Emerick, Nelson Morris)
>> * Support connecting to nrepl server in repl task. (Chas Emerick, Colin 
>> Jones)
>> * Pretty-print pom.xml. (Nelson Morris)
>> * Display task aliases in help task. (Michael S. Klishin)
>> * Only compile stale java source files. (Stephen C. Gilardi)
>> * Respect :java-cmd in project.clj. (Michael S. Klishin)
>> * Show progress when downloading search indices. (Justin Kramer)
>>
>> If you have an earlier preview version, you can pull this in via "lein
>> upgrade". If you only have Leiningen 1.x installed, you will have to
>> download preview3 by hand:
>>
>>     https://raw.github.com/technomancy/leiningen/preview/bin/lein
>>
>> Note that this does not conflict in any way with Leiningen 1.x; you can
>> keep the two of them installed side-by-side. It's common to save the
>> above script as "lein2" to differentiate between the two of them if you
>> have projects that don't yet work with Leiningen 2.
>>
>> So far we've found the preview2 release to be quite stable, so now would
>> be a great time to try upgrading if you've been holding off:
>>
>>     https://github.com/technomancy/leiningen/wiki/Upgrading
>>
>> If you're interested in contributing, I've categorized the existing
>> TODOs into low-hanging fruit, intermediate, and complex; pick something
>> and hop on the #leiningen channel in freenode:
>>
>>     https://github.com/technomancy/leiningen/blob/master/todo.org
>>
>> thanks!
>>
>> -Phil
>>
>>
> Op donderdag 12 april 2012 19:39:28 UTC+2 schreef Phil Hagelberg het 
> volgende:
>>
>>
>> Hello folks.
>>
>> I'm happy to announce the release of the third preview of Leiningen 2.0.0.
>>
>> Highlights include the ability to show a full dependency tree a la "mvn
>> dependency:tree", a host of repl improvements, better offline support,
>> and the ability to load "lein new" templates on-demand.
>>
>> * Add HTTP nREPL support for repl task via :connect option. (Chas Emerick,
>>   Phil Hagelberg)
>> * Improve repl startup time, output consistency, Windows support. (Lee 
>> Hinman,
>>   Colin Jones)
>> * Stop using numeric exit codes for task failures.
>> * Dynamically resolve unknown templates in new task.
>> * Automatically activate offline profile when needed.
>> * Honor $http_proxy environment variable. (Juergen Hoetzel)
>> * Allow arbitrary :filespecs to be included in jars.
>> * Let custom :prep-tasks be specified in project.clj.
>> * Include :java-source-paths and dev/test deps in pom. (Nelson Morris)
>> * Add offline profile.
>> * Prevent project JVMs from outlasting Leiningen's process. (Colin Jones)
>> * Update lein.bat to work with version 2. (Andrew Kondratovich)
>> * Show a dependency tree in deps task. (Chas Emerick, Nelson Morris)
>> * Support connecting to nrepl server in repl task. (Chas Emerick, Colin 
>> Jones)
>> * Pretty-print pom.xml. (Nelson Morris)
>> * Display task aliases in help task. (Michael S. Klishin)
>> * Only compile stale java source files. (Stephen C. Gilardi)
>> * Respect :java-cmd in project.clj. (Michael S. Klishin)
>> * Show progress when downloading search indices. (Justin Kramer)
>>
>> If you have an earlier preview version, you can pull this in via "lein
>> upgrade". If you only have Leiningen 1.x installed, you will have to
>> download preview3 by hand:
>>
>>     https://raw.github.com/technomancy/leiningen/preview/bin/lein
>>
>> Note that this does not conflict in any way with Leiningen 1.x; you can
>> keep the two of them installed side-by-side. It's common to save the
>> above script as "lein2" to differentiate between the two of them if you
>> have projects that don't yet work with Leiningen 2.
>>
>> So far we've found the preview2 release to be quite stable, so now would
>> be a great time to try upgrading if you've been holding off:
>>
>>     https://github.com/technomancy/leiningen/wiki/Upgrading
>>
>> If you're interested in contributing, I've categorized the existing
>> TODOs into low-hanging fruit, intermediate, and complex; pick something
>> and hop on the #leiningen channel in freenode:
>>
>>     https://github.com/technomancy/leiningen/blob/master/todo.org
>>
>> thanks!
>>
>> -Phil
>>
>>

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