diff --git a/avogadro/qtplugins/plugindownloader/pluginmanagerwidget.cpp b/avogadro/qtplugins/plugindownloader/pluginmanagerwidget.cpp
index cdd1ecb2de..bd42424bd8 100644
--- a/avogadro/qtplugins/plugindownloader/pluginmanagerwidget.cpp
+++ b/avogadro/qtplugins/plugindownloader/pluginmanagerwidget.cpp
@@ -202,7 +202,7 @@ void PluginManagerWidget::updatePluginsList()
           m_repoList[i].zipballUrl = it.value().get<std::string>().c_str();
         else if (it.key() == "has_release" && it.value().is_boolean())
           m_repoList[i].hasRelease = it.value().get<bool>();
-        else if (it.key() == "repo_url" && it.value().is_string())
+        else if (it.key() == "repo" && it.value().is_string())
           m_repoList[i].baseUrl = it.value().get<std::string>().c_str();
         else if (it.key() == "readme_url" && it.value().is_string())
           m_repoList[i].readmeUrl = it.value().get<std::string>().c_str();
@@ -392,6 +392,16 @@ void PluginManagerWidget::appendInstallationInformation(QString text) {
     text
   );
 }
+
+PluginManagerWidget::repo* PluginManagerWidget::getRepoByName(QString name) {
+  for(int i = 0; i < m_repoList.size(); i++) {
+    if ( name == m_repoList[i].name ) {
+      return &m_repoList[i];
+    }
+  }
+  return nullptr;
+}
+
 // Save and unzip the plugin zipball
 QString PluginManagerWidget::unzipPlugin()
 {
@@ -400,7 +410,12 @@ QString PluginManagerWidget::unzipPlugin()
     QByteArray fileData = m_reply->readAll();
     QDir().mkpath(m_filePath); // create any needed directories for the download
     QString repoName = m_downloadList.last().name;
-    QString filename = repoName + ".zip";
+    PluginManagerWidget::repo* repoData = getRepoByName(repoName);
+    std::string repoBaseUrl = repoData->baseUrl.toUtf8().toStdString();
+    std::string::size_type lastSlash = repoBaseUrl.rfind('/');
+    QString pluginOutputDirName = QString::fromStdString(repoBaseUrl.substr(lastSlash + 1));
+    
+    QString filename = pluginOutputDirName + ".zip";
 
     QString absolutePath = m_filePath + "/" + filename;
     QString extractDirectory;
@@ -466,7 +481,7 @@ QString PluginManagerWidget::unzipPlugin()
     m_reply->deleteLater();
     m_downloadList.removeLast();
     installNextPlugin();
-    return extractDirectory + QDir::separator() + repoName;
+    return extractDirectory + QDir::separator() + pluginOutputDirName;
   }
   return NULL;
 }
diff --git a/avogadro/qtplugins/plugindownloader/pluginmanagerwidget.h b/avogadro/qtplugins/plugindownloader/pluginmanagerwidget.h
index c5bba906af..76355499fe 100644
--- a/avogadro/qtplugins/plugindownloader/pluginmanagerwidget.h
+++ b/avogadro/qtplugins/plugindownloader/pluginmanagerwidget.h
@@ -103,6 +103,7 @@ public slots:
   void fetchPluginsList(QString url = "https://avogadro.cc/plugins.json");
   void installNextPlugin();
   bool checkSHA1(QByteArray);
+  repo* getRepoByName(QString name);
 
   std::vector<repo> m_repoList;
   Ui::PluginManagerWidget* m_ui;
diff --git a/avogadro/qtplugins/plugindownloader/pythoncmdlineinterface.cpp b/avogadro/qtplugins/plugindownloader/pythoncmdlineinterface.cpp
index bccbe6e5eb..6f8d1c5d9b 100644
--- a/avogadro/qtplugins/plugindownloader/pythoncmdlineinterface.cpp
+++ b/avogadro/qtplugins/plugindownloader/pythoncmdlineinterface.cpp
@@ -20,18 +20,21 @@ void installRequirements(const QString& folderPath, const QString& installMethod
     // Extract the environment name from pythonInstallation, if present
     QString envName;
     int colonIndex = pythonInstallation.indexOf(":");
-    int parenIndex = pythonInstallation.indexOf("(");
+    int parenIndex = pythonInstallation.indexOf(")");
     if (parenIndex != -1 && colonIndex != -1) {
-        envName = pythonInstallation.mid(parenIndex + 1, colonIndex - parenIndex - 1).trimmed();
+        assert(colonIndex < parenIndex);
+        envName = pythonInstallation.mid(colonIndex + 1, parenIndex - colonIndex - 1).trimmed();
     }
 
     // Prepare environment activation command only if envName is not empty
     QString activateCommand;
     if (!envName.isEmpty()) {
         if (pythonInstallation.contains("Conda")) {
-            activateCommand = (QSysInfo::productType() == "windows") ? 
-                               QString("activate %1 && ").arg(envName) : 
-                               QString("conda activate %1 && ").arg(envName);
+            if ( envName.isEmpty() ) {
+                activateCommand = QString("conda run ");
+            } else {
+                activateCommand = QString("conda run -n %1 ").arg(envName);
+            }
         } else if (pythonInstallation.contains("VirtualEnv")) {
             activateCommand = (QSysInfo::productType() == "windows") ? 
                                QString("%1\\Scripts\\activate && ").arg(envName) : 
@@ -56,18 +59,17 @@ void installRequirements(const QString& folderPath, const QString& installMethod
             QMessageBox::information(nullptr, "Installation Info", "Conda cannot install from a pyproject.toml file.");
             return;
         }
+    } else {
+        QMessageBox::information(nullptr, "No Requirements Found", "Neither requirements.txt nor pyproject.toml found.");
+        return;
     }
 
-    if (!installCommand.isEmpty()) {
-        QProcess process;
-        process.start(installCommand);
-        process.waitForFinished();
+    QProcess process;
+    process.start(installCommand);
+    process.waitForFinished();
 
-        if (process.exitCode() != 0) {
-            QMessageBox::critical(nullptr, "Installation Error", process.readAllStandardError());
-        }
-    } else {
-        QMessageBox::information(nullptr, "No Requirements Found", "Neither requirements.txt nor pyproject.toml found.");
+    if (process.exitCode() != 0) {
+        QMessageBox::critical(nullptr, "Installation Error", process.readAllStandardError());
     }
 }