diff --git a/core/core.mjs b/core/core.mjs
index 3646915..0c5fc24 100644
--- a/core/core.mjs
+++ b/core/core.mjs
@@ -50,19 +50,53 @@ export default class Core {
 
     let names = this.util.getAppNames(this.db.config)
 
-    for (let name of names) {
-      let provConstructor = Core.providers.get(this.db.config[name].provider)
-      let provider = new provConstructor(this.db.config[name])
-      await provider.checkConfig(this.db.config[name])
+    let lastError = null
 
-      let application = new Application({
-        db: this.db,
-        util: this.util,
-        log: this.log,
-        core: this,
-      }, provider, name)
-      this.applications.push(application)
-      this.applicationMap.set(name, application)
+    for (let name of names) {
+      try {
+        let provConstructor = Core.providers.get(this.db.config[name].provider)
+        let provider = new provConstructor(this.db.config[name])
+        await provider.checkConfig(this.db.config[name])
+
+        let application = new Application({
+          db: this.db,
+          util: this.util,
+          log: this.log,
+          core: this,
+        }, provider, name)
+        this.applications.push(application)
+        this.applicationMap.set(name, application)
+      } catch (err) {
+        this.log.error(err, `Error creating application ${name} with provider ${this.db.config[name].provider}: ${err.message}`)
+        lastError = err
+      }
+    }
+
+    if (names.length && !this.applications.length) {
+      throw lastError
     }
   }
+
+  async runApplication(name) {
+    let application = this.applicationMap.get(name)
+
+    if (!application) {
+      return Promise.reject(new Error(`Core.runApplication was called on a non-existing application name ${name}`))
+    }
+
+    let found = false
+
+    for (let i = 0; i < this.db.data.core[name].versions.length; i++) {
+      let version = this.db.data.core[name].versions[i]
+      await application.closeServer()
+
+      try {
+        await application.runVersion()
+      } catch(err) {
+        this.log.error(err, `Error starting ${name} ${version.id}: ${err.message}`)
+      }
+    }
+
+    throw new Error(``)
+  }
 }
diff --git a/test/application.run.test.mjs b/test/application.run.test.mjs
index 8d7c68c..358eb63 100644
--- a/test/application.run.test.mjs
+++ b/test/application.run.test.mjs
@@ -23,14 +23,6 @@ t.describe('#runVersion("static")', function() {
       return server.listenAsync(port)
     }
   }
-
-  t.before(function() {
-    return fs.mkdir(util.getPathFromRoot('./testnoexisting'), { recursive: true })
-  })
-
-  t.after(function() {
-    return fs.rm(util.getPathFromRoot('./testnoexisting'), { force: true, recursive: true })
-  })
   
   t.beforeEach(function() {
     return createFakeContext()
@@ -163,15 +155,13 @@ t.describe('#runVersion("version")', function() {
   let ctx
   let app
 
-  t.before(function() {
-    return fs.rm(util.getPathFromRoot('./testnoexisting'), { force: true, recursive: true })
-      .then(function() {
-        return fs.mkdir(util.getPathFromRoot('./testnoexisting'), { recursive: true })
-      })
-  })
-
   t.after(function() {
-    return fs.rm(util.getPathFromRoot('./testnoexisting'), { force: true, recursive: true })
+    return Promise.all([
+      fs.rm(util.getPathFromRoot('./testnoexisting/v100'), { force: true, recursive: true }),
+      fs.rm(util.getPathFromRoot('./testnoexisting/v99'), { force: true, recursive: true }),
+      fs.rm(util.getPathFromRoot('./testnoexisting/v98'), { force: true, recursive: true }),
+      fs.rm(util.getPathFromRoot('./testnoexisting/v97'), { force: true, recursive: true }),
+    ])
   })
 
   t.beforeEach(function() {
diff --git a/test/core.test.mjs b/test/core.test.mjs
index 1d4d111..efa12f7 100644
--- a/test/core.test.mjs
+++ b/test/core.test.mjs
@@ -267,7 +267,7 @@ t.describe('#init()', function() {
   }
 
   t.beforeEach(function() {
-    core = new Core(db, util, createFakeLog(), function() {})
+    core = new Core(db, util, log, function() {})
     core.util = fakeUtil = {
       verifyConfig: stub(),
       getAppNames: stub().returns([]),
@@ -362,12 +362,127 @@ t.describe('#init()', function() {
     assert.ok(application.fresh)
     assert.ok(application.provider instanceof FakeProvider)
   })
-})
 
-t.describe('#runApplication()', function() {
-  let core
+  t.test('should continue even if one application fails', async function() {
+    log.error.reset()
+    const assertProviderFailName = 'Knee Socks'
+    let stubFailCheckConfig = stub()
+    function FakeFailProvider(config) {
+      fakeProvider(config)
+      this.static = true
+      this.checkConfig = stubFailCheckConfig
+    }
+    Core.providers.set(assertProviderFailName, FakeFailProvider)
 
-  t.beforeEach(function() {
-    core = new Core(db, util, createFakeLog(), function() {})
+    const assertError = new Error('Justice of light')
+    const assertFirstAppName = 'Kaeshite'
+    const assertSecondAppName = 'Motteke'
+    const assertTestFirstString = 'Magia'
+    const assertTestSecondString = 'Snow Falling'
+    const assertConfig = {
+      [assertFirstAppName]: {
+        provider: assertProviderName,
+        teststring: assertTestFirstString,
+      },
+      [assertSecondAppName]: {
+        provider: assertProviderFailName,
+        teststring: assertTestSecondString,
+      },
+    }
+    stubFailCheckConfig.throws(assertError)
+    db.config = assertConfig
+    fakeUtil.getAppNames.returns([assertSecondAppName, assertFirstAppName])
+    assert.strictEqual(core.applications.length, 0)
+
+    await core.init()
+    let application = core.getApplication(assertFirstAppName)
+    
+    assert.ok(application)
+    assert.strictEqual(core.applications.length, 1)
+    assert.strictEqual(core.applications[0], application)
+    assert.strictEqual(application.name, assertFirstAppName)
+    assert.strictEqual(application.ctx.db, core.db)
+    assert.strictEqual(application.ctx.util, core.util)
+    assert.strictEqual(application.ctx.log, core.log)
+    assert.strictEqual(application.ctx.core, core)
+    assert.strictEqual(application.config.teststring, assertTestFirstString)
+    assert.ok(application.fresh)
+    assert.ok(application.provider instanceof FakeProvider)
+    assert.ok(log.error.called)
+    assert.strictEqual(log.error.firstCall[0], assertError)
+    assert.match(log.error.firstCall[1], new RegExp(assertProviderFailName))
+    assert.match(log.error.firstCall[1], new RegExp(assertSecondAppName))
+    assert.match(log.error.firstCall[1], new RegExp(assertError.message))
+  })
+})
+
+t.only().describe('#runApplication()', function() {
+  let core
+  let testApp
+  let testAppName
+
+  t.beforeEach(function() {
+    db.data.core = {
+      [testAppName]: {
+        versions: []
+      }
+    }
+    core = new Core(db, util, log, function() {})
+    log.info.reset()
+    log.warn.reset()
+    log.error.reset()
+    testAppName = 'Precure'
+    testApp = {
+      fresh: true,
+      closeServer: stub(),
+      runVersion: stub(),
+    }
+    core.applicationMap.set(testAppName, testApp)
+  })
+
+  t.test('should throw if application not found', async function() {
+    const assertAppName = 'Sweet Sweet Sweets'
+    
+    let err = await assert.isRejected(core.runApplication(assertAppName))
+
+    assert.match(err.message, new RegExp(assertAppName))
+    assert.match(err.message, /exist/i)
+  })
+
+  t.test('Should always attempt to close application first', async function() {
+    const assertAppName = 'Pyramid Collapse'
+    const assertError = new Error('Pyramid Collapse')
+    const stubClose = stub().rejects(assertError)
+    db.data.core[assertAppName] = {
+      versions: [{}]
+    }
+    core.applicationMap.set(assertAppName, {
+      closeServer: stubClose,
+    })
+
+    let err = await assert.isRejected(core.runApplication(assertAppName))
+
+    assert.strictEqual(err, assertError)
+  })
+
+  t.test('should select first valid version', async function() {
+    const assertVersion = 'v50'
+    const assertError = new Error('jellyfish')
+    testApp.runVersion.rejects(assertError)
+    db.data.core[testAppName].versions.push({
+      id: assertVersion,
+      version: assertVersion + 'asdf',
+      installed: true,
+      stable: 0,
+    })
+
+    let err = await assert.isRejected(core.runApplication(testAppName))
+    assert.notStrictEqual(err, assertError)
+    assert.ok(log.error.called)
+
+    assert.strictEqual(log.error.firstCall[0], assertError)
+    assert.match(log.error.firstCall[1], new RegExp(testAppName))
+    assert.match(log.error.firstCall[1], new RegExp(assertVersion))
+    assert.match(log.error.firstCall[1], new RegExp(assertError.message))
   })
 })
diff --git a/test/testnoexisting/.gitkeep b/test/testnoexisting/.gitkeep
new file mode 100644
index 0000000..e69de29