Scala "sbt new sbt/scala-seed.g8"でエラーがでます。

前提・実現したいこと

Scala入門者向けハンズオン #3に向けて、
事前準備をしております。
IntelliJ IDEAをインストールまでは完了したのですが、
最後の”sbt new sbt/scala-seed.g8”によるひな形生成が行なえません。
実行時のメッセージをエラーメッセージとして記載します。

実行環境
OS : Windows 7 64bit
Java : 1.8.0_144
javac : 1.8.0_144

発生している問題・エラーメッセージ

”sbt new sbt/scala-seed.g8”を実行しても、雛形を生成できません。
”sbt new sbt/scala-seed.g8”を実行するために、何をする必要があるのか教えていただきたいです。

エラーメッセージ
"C:\Users\xxxx\.sbt\preloaded\org.scala-sbt\sbt\"1.0.2"\jars\sbt.jar"
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; sup
port was removed in 8.0
Getting org.fusesource.jansi jansi 1.11 ...

:: problems summary ::
:::: WARNINGS
                module not found: org.fusesource.jansi#jansi;1.11

        ==== local: tried

          C:\Users\xxxx\.ivy2\local\org.fusesource.jansi\jansi\1.11\ivys\ivy.xml

          -- artifact org.fusesource.jansi#jansi;1.11!jansi.jar:

          C:\Users\xxxx\.ivy2\local\org.fusesource.jansi\jansi\1.11\jars\jansi.jar

        ==== local-preloaded-ivy: tried

          file:/C:/Users/xxxx/.sbt/preloaded/org.fusesource.jansi/jansi/1.11/ivys/ivy.xml

        ==== local-preloaded: tried

          file:/C:/Users/xxxx/.sbt/preloaded/org/fusesource/jansi/jansi/1.11/jansi-1.11.pom

          -- artifact org.fusesource.jansi#jansi;1.11!jansi.jar:

          file:/C:/Users/xxxx/.sbt/preloaded/org/fusesource/jansi/jansi/1.11/jansi-1.11.jar

        ==== Maven Central: tried

          https://repo1.maven.org/maven2/org/fusesource/jansi/jansi/1.11/jansi-1.11.pom

          -- artifact org.fusesource.jansi#jansi;1.11!jansi.jar:

          https://repo1.maven.org/maven2/org/fusesource/jansi/jansi/1.11/jansi-1.11.jar

        ==== sbt-maven-releases: tried

          https://repo.scala-sbt.org/scalasbt/maven-releases/org/fusesource/jansi/jansi/1.11/jansi-1.11.pom

          -- artifact org.fusesource.jansi#jansi;1.11!jansi.jar:

          https://repo.scala-sbt.org/scalasbt/maven-releases/org/fusesource/jansi/jansi/1.11/jansi-1.11.jar

        ==== sbt-maven-snapshots: tried

          https://repo.scala-sbt.org/scalasbt/maven-snapshots/org/fusesource/jansi/jansi/1.11/jansi-1.11.pom

          -- artifact org.fusesource.jansi#jansi;1.11!jansi.jar:

          https://repo.scala-sbt.org/scalasbt/maven-snapshots/org/fusesource/jansi/jansi/1.11/jansi-1.11.jar

        ==== typesafe-ivy-releases: tried

          https://repo.typesafe.com/typesafe/ivy-releases/org.fusesource.jansi/jansi/1.11/ivys/ivy.xml

        ==== sbt-ivy-snapshots: tried

          https://repo.scala-sbt.org/scalasbt/ivy-snapshots/org.fusesource.jansi/jansi/1.11/ivys/ivy.xml

                ::::::::::::::::::::::::::::::::::::::::::::::

                ::          UNRESOLVED DEPENDENCIES         ::

                ::::::::::::::::::::::::::::::::::::::::::::::

                :: org.fusesource.jansi#jansi;1.11: not found

                ::::::::::::::::::::::::::::::::::::::::::::::


:::: ERRORS
        Server access Error: Connection reset url=https://repo1.maven.org/maven2/org/fusesource/jansi/jansi/1.11/jansi-1.11.pom

        Server access Error: Connection reset url=https://repo1.maven.org/maven2/org/fusesource/jansi/jansi/1.11/jansi-1.11.jar

        Server access Error: Connection reset url=https://repo.scala-sbt.org/scalasbt/maven-releases/org/fusesource/jansi/jansi/1.11/jansi-1.11.pom

        Server access Error: Connection reset url=https://repo.scala-sbt.org/scalasbt/maven-releases/org/fusesource/jansi/jansi/1.11/jansi-1.11.jar

        Server access Error: Connection reset url=https://repo.scala-sbt.org/scalasbt/maven-snapshots/org/fusesource/jansi/jansi/1.11/jansi-1.11.pom

        Server access Error: Connection reset url=https://repo.scala-sbt.org/scalasbt/maven-snapshots/org/fusesource/jansi/jansi/1.11/jansi-1.11.jar

        Server access Error: Connection reset url=https://repo.typesafe.com/typesafe/ivy-releases/org.fusesource.jansi/jansi/1.11/ivys/ivy.xml

        Server access Error: Connection reset url=https://repo.scala-sbt.org/scalasbt/ivy-snapshots/org.fusesource.jansi/jansi/1.11/ivys/ivy.xml


:: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE DETAILS
unresolved dependency: org.fusesource.jansi#jansi;1.11: not found
Error during sbt execution: Error retrieving required libraries
  (see C:\Users\xxxx\.sbt\boot\update.log for complete log)
Error: Could not retrieve jansi 1.11


###該当のソースコード

ここに言語を入力
ここにご自身が実行したソースコードを書いてください
```

試したこと

pathの確認、googleなどで原因を追ってみましたが、原因がわかりません。
また、conscript_2.11-0.5.2-proguard.jarのインストールを行おうとしましたが、
こちらもうまくインストールできない状況です。

補足情報(言語/FW/ツール等のバージョンなど)

より詳細な情報