The problem very probably is caused by a corrupted serial number file. Please be sure to delete it, and then to serialise again.

To delete the serial number file, you need to start SilverFast up using the SF_Launcher. If "start automatically" is activated, the SilverFast plug-in will be started, too. Please close down the SilverFast programme while leaving the SF_Launcher opened.

Using Windows, now press the keyboard combination: Shift+S+F and click on the "Start" button of the SF_Launcher while keeping the keys pressed. Instead of SilverFast, the "Service Dialogue" window will appear.

Using a Macintosh, please use the combination Alt+Shift+S+F instead and click on "Start" to make the "Service Dialogue" come up.

This will allow you to delete the serialisation, the preferences, or to copy the SF_Logfile to the desktop.

Please note that you need sufficient file permission rights so that the SilverFast service dialogue can succeed in deleting the corrupted file(s).
You therefore want to log-on as administrator (on a Windows system) or root (on a Mac OS X computer).

Note that a Mac OS X admin user may not initially have enough file permission rights, as the admin role on an OS X system means that you can get rights, but do not work all the time with these.
For "how to become root", see another FAQ entry below.

Thank you for your interest in the new features!
To aid you in upgrading your version easily we put a step-by-step-instruction online.

If you purchased the IT8 calibration option as an add-on, you have to update the program with your new serial number.
Start SilverFast. In the button panel of the pre-scan window, locate the info button (labelled "i", topmost button).
Click on the info button. A new window will appear, click "Credits", click "Upgrade".

You now have the opportunity to change the serial number. Please enter the serial number provided for the IT8 option.

After confirmation of this serialization dialog window, you should now find the IT8 calibration button on the button panel of the preview window (located in the middle, depicting a set of scales with a coloured bar underneath the scales).

For detailed information on how to go about with SilverFast's IT8 calibration function, please visit Ian Lyon's tutorial.
Also available on our website is a movie demonstration (5.1 MB) of the IT8 calibration procedure.

You need to be administrator / root when serializing SilverFast 6.x in OS X. The software will then be serialized for all users on a system. If you have a SilverFast program CD, please insert this CD before starting the software ! The CD won't be recognized if it is inserted while SilverFast is running. Cf. Apple's support webpages, article ID: 106290 for detailed information on "enabling and using the "root" user in Mac OS X".

if you have both scanners connected and switched on at the same time while you launch the new SilverFast 5.5 it will possibly find the LS2000/LS30 first and opens with a serial prompt. You enter your serial no. but it is tailored to another Nikon scanner model, and SilverFast will reject your serial number.

Solution:
switch off the Nikon SCSI scanner that was found first by SilverFast and launch SilverFast again. This time it will find the remaining Nikon scanner.

depending on how you got your first version (by download or on CD) you'd need:
- a SilverFast SE CD inside your CDRom drive if your first version was from a CD.

- the exact credit card name you used when you purchased the "SE online version" otherwise your serial number will NOT be recognised.

Another commen reason for iSE versions not recognising serial numbers is that users mistakenly download a "BUNDLE SE software" instead of the (correct) "Internet SE software".

If nothing helps, the latter case might effect you. Delete what you have, return to the download section and get a fresh "Internet SE" version. Use your exact credit card name with your serial number.

- only admintrator accounts can install SilverFast - the administrator has to enter the serial number, in order to unlock the software for all local users.

If you want ot connet an old SilverFast 4.x with a ADB dongle through a USB port to your Macintosh you will need the "MAC ADB to USB Adapter" (from Newmotion)
the installer kit will install two extensions called:
"NewmotionUSBADBMouseModule" and "NewMotionUSBADBModule",
without these two extensions the USB-ADB adapter won't function properly.

http://www.griffintechnology.com/imac/imate_driver.html

Alternatively you could purchase a SilverFast upgrade to the current SilverFast version - which does not need a dongle anymore. Check our web site for upgrade prices.