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Known problems


Windows 10 Quicktime Installation

The following text is from

Windows 10

Please follow below steps and check if it helps.

  • 1. Go to official apple site.
  • 2. You can unpack it with WinRAR or other decompress tools.
  • 3. You will see 4 files in the "exe" file, it’s actually a package. Don't install with QuickTime.msi, you'll fail.
  • 4. Install AppleApplicationSupport.msi and AppleSoftwareUpdate.msi. It's better to install AppleApplicationSupport since actually AppleSoftwareUpdate is the key one.
  • 5. Open AppleSoftwareUpdate you just installed. After checking new versions, you may see QuickTime in the list. Install it.

Multiple Versions of Quicktime

To find out if you have multiple versions of QTMLClient on your drives do the following:

Windows 7:
  • Click the Start menu.
  • Just above the start menu a searchfile appears.
  • Enter QTMLClient.dll. On Windows 7 the search starts automatically.
Windows Vista:
  • Click the magnifying glass Search Everywhere.
  • In the upcoming Window click Advanced Search.
  • And activate the checkbox Include non-indexed, hidden and system files.
  • In the Name field enter QTMLClient.dll and click on search.
In Windows XP:

Click "Start" --> "Search". On the left bottom click "Click here to use Search Companion". In the upcoming window click "More advanced options" and select "Search system folders", "Search hidden files and folders" and "Search subfolders". In "All or part of the filename" enter "qtmlclient.dll" and click the "Search button.

You should find at least one version of the file QTMLClient.dll in C:\Program Files\Quicktime\QTSystem. If you find other versions beside C:\Program Files\Quicktime\QTSystem rename those versions. Be cautious and do not delete the other versions, just rename them for a test and reboot the system. Start Listening Singing(Music Teacher again. If you then get problems with other programs re-rename the renamed version back to the original name, other programs may need this older versions.


Program does not start after installing new version

Some older versions did install the program data in the virtual store of Windows Vista. Unfortunately, Windows un-install does not remove this data. Thus, the program is trying to start with the old incompatible data: and stops working immediately. If you face this problem, delete the appropriate data store:

In a Windows-Explorer navigate to \Users\<Your Username>\AppData\Local\VirtualStore\ProgramData

If the folder AppData is not visible in the Explorer, then you must first un-hide the folder by turning off the "hidden folders" feature under the Edit menu >Folder Options. After deleting the directory, don't forget to hide the "hidden folders" again.

Check if a folder named AlgorithmsAndDatastructures is present in the ProgramData directory.

If the directory AlgorithmsAndDatastructures exits, then this directory was mistakenly created by an older version of the program. Delete all directories and files under AlgorithmsAndDatastructures, and then delete the directory AlgorithmsAndDatastructures.

Start the program that stopped working again: it should now start (no re-boot or re-installation should be necessary).


Language Issues

Some language settings confuse the program. If the program shows an error message "EConvertError: Invalid date", then try the following (Windows):

Create a new local login user on your system: e. g. "User English". (Change PC Settings > Accounts > Other Account ; Click "Add an account", click "Sign in without a microsoft account"; Choose "Local account").

Login as this new user

Open Regional and Language Options by clicking the Start button Picture of the Start button, clicking Control Panel, clicking Clock, Language, and Region, and then clicking Regional and Language Options.

Click the Keyboards and Languages tab.

Under Display language, choose English from the list, and then click OK.

Testing Latency

To test if the program, which uses OpenAL, has latency, do the following:

  • Choose the lesson: "Scale: Sing after me".
  • On the next page click "Start".
  • On the appearing "Exercise Options" dialog, select "NoNote" for "Note Assistance".
  • Under "Sound Options" set "Beatclicks" from "noClicks" to "beatClicks".
  • Click "Go" and be quiet, so that the system can record the beat clicks.
  • In the upper part of the Window, where the bouncing beat ball line is shown, check if the beat clicks get a green marking. If they are blue and lag behind the white reference line, the system has a latency issue. That is the sound needs too much time before it is hearable through the speakers. In this case the program is not suited for your computer hardware (Vista users: Upgrading to Windows 7 may help).

Midi and lyrics

  • Not all midi files contain a lyrics track.
  • Sometimes the times-stamps for the lyrics track are set to appear before the actual midi note sound. This has the advantage for the performer that the text gets highlighted just before the note is active. Unfortunately, Listening Singing Teacher can not always assign the lyrics to the correct note in this case.
  • In other cases the melody track is split into two or more tracks. For example the solo will be played on a saxophone track and the common refrain is played on a trumpet track. However, with Listening Singing Teacher you can only assign one track to the melody. In this way, midi files which use this technique make it more pleasant to listen to the music, but the single tracks will not contain the whole melody. Therefore there will be "missing" parts on the staff when imported by Listening Singing Teacher.
  • To overcome these problems, you must have a midi editor, which allows you to add or adjust lyrics time-stamps or to merge two channels into one again.



Audio Input Problems

Microphone Input level too low, distortion or audio device not supported (Macintosh)

In the applications Utility Folder open “Audio Midi Setup”, and Select the “Audio Devices” Tab. From the “Default Input” Drop down Menu choose your microphone and in the “Properties For” also choose your microphone (see below). Drag the slider on the bottom of “Audio Input” to the right. Also make sure that the selected format is 44100.0 HZ and one channel 16 bit (1ch-16bit).

Other audio applications (e. g. GarageBand) may reset the input level, the frequency or the 16bit setting to 8bit. Be sure to check and set the following settings correctly:

Audio Setup Mac


Microphone Input level too low, distortion or audio device not supported (Windows)

In the control panel choose "Harware and Sound".

Click on "Manage audio devices".

Select the "Recording"-tab.

Highlight the microphone and click "Properties".

In the up-coming "Microphone Properties" Window, select the "Advanced"-tab.

Make sure that the default format is set to "2 channel, 16 bit, 44100 HZ" and in the Exclusive Mode Section both features are set.

Sound Settings Windows

If you have more than one input device, make sure thet in the recording -tab the Mikrofon is set as the default.

If the input is too low, click the "Levels"-tab in the "Microphone Properties" Window, and then move the slider to the right.

Set Microphone level




Manual Activation

Unfortunately, the manual activation is a little bit complicated. There are three different numbers:

Please do not confuse these three numbers.

Here are instructions that illustrate the process of a manual activation:

  1. a) Start Listening Singing Teacher on the computer you would like to use the product..
  2. b) On the "Select User" page the Serial-number field should read "Trial-Version".
  3. c) Enter your serial number from the confirmation mail. Entering the serial number manually has the potential to make mistakes (8 for B, O for 0, etc). So a better way is to use the button "Paste" which is on the same line as the serial number field. After clicking paste check visually that the beginning and the end of the serial number are ok.
  4. d) Make sure you have an online connection, then click the button "Activate".
  5. e) The following Browser window will open: Activation Options
  6. f) Leave "Activate using a web browser on this computer" selected and click "Next". The following window should appear: Web Activation
  7. g) Do not click "Next" yet. Click on the activation URL link in the window. (Do not open a separate browser-win dow, the browser will be started automatically with additional information). The following window should appear: After-Purchase Servises
  8. h) The installation ID is hardware dependent and will be pre-filled. (If the field is empty then you probably started a manual browser window. Go back and click the link in the Web Activation window).
    (Your pre filled data are of course different, this pre filled data get calculated from the serial number and hardware components of the computer (So I do not know what esellarate exactly uses. But this process allows to calculate an activation key for a computer which is not online. This means you could enter the installation ID (of an offline computer) on a computer which is online and get an activation key back for the offline computer.)).
    Place the cursor at the end of the pre-filled Installation ID number by clicking behind the end of the pre-filled string. (I was told by a customer that the activation would only work if he did this)
    Click Submit.
  9. i) In the lower window part under "Activation Key" the field should now be filled with an Activation ID: After-Purchase Services 2 Mark and copy the activation key. Close this window.
  10. j) The "Web Activation" window should be visible again: Web Activation 2 Now click "Next".
  11. k) The Enter Activation Key window should appear: Enter Activation Key Paste the activation key. Enter Activation Key 2 Click "Activate".
  12. l) You should be brought back to Listening Singing Teacher. The button "Activate" in the Select User page should now read "Deactivate". And all lessons should now be available.

    Please let us know if you get a problem during the steps a) through l). You have to be online to activate the program. If the machine cannot be taken online, you should write down the Identification key you get in step f) and do the following steps on a computer which is online until you get the activation key for that machine. With the activation key you get, you should be able to do an activation on the machine without having an online connection.


Already Registered but Serial Number not shown?

After an update it may be that the program tells you that you only have a "Trial-Version". In this case try the following steps:


Can't activate Serial number on older macOS

Macintosh users using macOS's prior to macOS Sierra (10.12), please download the 32 bit version:

Same ListeningSingingTeacher V1.83 Macintosh (dmg)

Same ListeningMusicTeacher V1.42 Macintosh (dmg)

Same ListeningEarTrainer V1.34 Macintosh (dmg)

SamePitchPlease V1.06 Macintosh (dmg)

If you still have problems reactivating your program, please let us know by sending us an email and your serial number.