fixes #526

main/commons/src/main/java/org/cryptomator/common/LazyInitializer.java

@@ -48,7 +48,7 @@ public final class LazyInitializer {
 			try {
 				return reference.updateAndGet(invokeFactoryIfNull(factory));
 			} catch (InitializationException e) {
-				Throwables.throwIfUnchecked(e);
+				Throwables.throwIfUnchecked(e.getCause());
 				Throwables.throwIfInstanceOf(e.getCause(), exceptionType);
 				throw e;
 			}
@@ -61,7 +61,6 @@ public final class LazyInitializer {
 				try {
 					return factory.get();
 				} catch (Exception e) {
-					Throwables.throwIfUnchecked(e); // don't catch unchecked exceptions
 					throw new InitializationException(e);
 				}
 			} else {

main/ui/src/main/java/org/cryptomator/ui/controllers/UnlockController.java

@@ -8,6 +8,7 @@
  ******************************************************************************/
 package org.cryptomator.ui.controllers;
 
+import java.io.IOException;
 import java.util.Arrays;
 import java.util.Comparator;
 import java.util.Objects;
@@ -372,6 +373,9 @@ public class UnlockController implements ViewController {
 		}).onError(ServerLifecycleException.class, e -> {
 			LOG.error("Unlock failed for technical reasons.", e);
 			messageText.setText(localization.getString("unlock.errorMessage.unlockFailed"));
+		}).onError(IOException.class, e -> {
+			LOG.error("Unlock failed for technical reasons.", e);
+			messageText.setText(localization.getString("unlock.errorMessage.unlockFailed"));
 		}).andFinally(() -> {
 			if (!savePassword.isSelected()) {
 				passwordField.swipe();

main/ui/src/main/java/org/cryptomator/ui/model/AutoUnlocker.java

@@ -5,6 +5,7 @@
  *******************************************************************************/
 package org.cryptomator.ui.model;
 
+import java.io.IOException;
 import java.nio.CharBuffer;
 import java.util.Arrays;
 import java.util.Collection;
@@ -74,7 +75,7 @@ public class AutoUnlocker {
 		try {
 			vault.unlock(CharBuffer.wrap(storedPw));
 			mountSilently(vault);
-		} catch (CryptoException e) {
+		} catch (IOException | CryptoException e) {
 			LOG.error("Auto unlock failed.", e);
 		} finally {
 			Arrays.fill(storedPw, ' ');

main/ui/src/main/java/org/cryptomator/ui/model/Vault.java

@@ -14,6 +14,7 @@ import java.nio.file.DirectoryStream;
 import java.nio.file.FileAlreadyExistsException;
 import java.nio.file.FileSystem;
 import java.nio.file.Files;
+import java.nio.file.NoSuchFileException;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.Objects;
@@ -84,11 +85,11 @@ public class Vault {
 	// Commands
 	// ********************************************************************************/
 
-	private CryptoFileSystem getCryptoFileSystem(CharSequence passphrase) throws IOException, InvalidPassphraseException, CryptoException {
+	private CryptoFileSystem getCryptoFileSystem(CharSequence passphrase) throws NoSuchFileException, IOException, InvalidPassphraseException, CryptoException {
 		return LazyInitializer.initializeLazily(cryptoFileSystem, () -> unlockCryptoFileSystem(passphrase), IOException.class);
 	}
 
-	private CryptoFileSystem unlockCryptoFileSystem(CharSequence passphrase) throws IOException, InvalidPassphraseException, CryptoException {
+	private CryptoFileSystem unlockCryptoFileSystem(CharSequence passphrase) throws NoSuchFileException, IOException, InvalidPassphraseException, CryptoException {
 		CryptoFileSystemProperties fsProps = CryptoFileSystemProperties.cryptoFileSystemProperties() //
 				.withPassphrase(passphrase) //
 				.withFlags() //
@@ -116,20 +117,16 @@ public class Vault {
 		CryptoFileSystemProvider.changePassphrase(getPath(), MASTERKEY_FILENAME, oldPassphrase, newPassphrase);
 	}
 
-	public synchronized void unlock(CharSequence passphrase) throws InvalidPassphraseException, ServerLifecycleException {
-		try {
-			FileSystem fs = getCryptoFileSystem(passphrase);
-			if (!server.isRunning()) {
-				server.start();
-			}
-			servlet = server.createWebDavServlet(fs.getPath("/"), vaultSettings.getId() + "/" + vaultSettings.mountName().get());
-			servlet.start();
-			Platform.runLater(() -> {
-				state.set(State.UNLOCKED);
-			});
-		} catch (IOException e) {
-			LOG.error("Unable to provide filesystem", e);
+	public synchronized void unlock(CharSequence passphrase) throws ServerLifecycleException, CryptoException, IOException {
+		FileSystem fs = getCryptoFileSystem(passphrase);
+		if (!server.isRunning()) {
+			server.start();
 		}
+		servlet = server.createWebDavServlet(fs.getPath("/"), vaultSettings.getId() + "/" + vaultSettings.mountName().get());
+		servlet.start();
+		Platform.runLater(() -> {
+			state.set(State.UNLOCKED);
+		});
 	}
 
 	public synchronized void mount() throws CommandFailedException {