LT-Extender.de

FAQ

In the FAQ you can find answers for frequently asked questions working with the LT-Extender. These questions are listed in topics.

Topic		Question
Questions about versions		Which Windows^®-Versions are supported by LT-Extender ? And which AutoCAD-Versions are supported ? How to install / update with a new LT-Extender version ? What about LT-Extender's compatibility with older / newer versions ?
Questions about the LT-Extender		Online-Help will not open or will open with error messages ? Do the Autodesk "Express Tools" work with LT ? Which ARX program files can be used with LT ?
Known restrictions		There is no AutoLisp available at the command prompt Using AutoLisp expressions inside Menus Usage of VisualLisp programs (.fas, .vlx) is not available Special programming interfaces are not available under AutoCAD LT "DemandLoad" feature for Arx applications will not work properly "Object Properties" dialog will ignore applications-defined entities
Common Problems and Question		Installers of AutoCAD applications will fail to install because of missing AutoCAD

Questions about versions
Which Windows^®-Versions are supported by LT-Extender ?		Thats simple: all Windows^® versions since Windows^®98
Which AutoCAD-LT versions are supported ?		Also simple: all LT-Versions 2000, 2000i, 2002
How to install / update with a new LT-Extender version ?		Installing a new version is really simple: unzip the downloaded files, the setup program (*.exe) is given. Close all AutoCAD sessions and run the setup program. You only need to define the LT-Extender's program path (simply install the new version ontop of your existing version). When overwriting existing LT-Extender, all user data are untouched ! There is a simple principle: DEMO remains DEMO, LICENCE remains LICENCE. You can't make anything wrong ...
What about LT-Extender's compatibility with older / newer versions?		Because LT Extender does not save any data into the autocad files there are no problems with compatibility. Only some features of LT Extender can be changed or new in later versions.
Questions about the LT-Extender
Online-Help will not open or will open with error messages ?		The Online-Help (LT-Extender.chm) is also available from LT-Extender's start menu program group - and should also open from there - chm helpfiles are directly displayed by Windows. If you see an error message, so Window^® is not able to open the helpfile. Only Windows^® 98 and Windows^® 2000 (or newer) are able to open CHM-helpfiles. Additionally, when installing Microsoft^® IE 4.01 (or higher) the CHM-helpfile-viewer is installed or updated. If you can not open the chm-helpfile "LT-Extender.chm" you may do these solutions: Install the "Update for Windows CHM-Help-System" at our download area (recommended !) or Install the Microsoft^® Internet-Explorer 4.01 or higher (recommended: 5.0/5.5/6)
Do the Autodesk "Express Tools" work with LT ?		Currently, LT-Extender supports ExpressTools Vol.1-8 from AutoCAD 2000 and ExpressTools Vol.1-9 (since AutoCAD 2000i) without major problems;. If ExpressTools are present (Support path !), LT-Extender will automatically load and activate them.
Which ARX program files can be used with LT ?		ARX files from AutoCAD 14 can not be used with AutoCAD/LT 2000 and higher; ARX files from AutoCAD 2000-2002 can not be used with AutoCAD/LT 2004. This is caused by technical details of API (Application Programming Interface) implementation.. ARX files usable : with LT 2000-2002 only ARX files designed for AutoCAD 2000-2002 can be used with LT 2004 only ARX files designed for AutoCAD 2004 can be used
Known restrictions
There is no AutoLisp available at the command prompt		Starting with version v.1.7, AutoLisp expressions are available directly at the command prompt ! Additionally, LT-Extender provides the special interactive Lisp prompt. Thus, this slight limitation should not be a handicap for the users ?
Using AutoLisp expressions inside Menus		Starting with version v.1.7, AutoLisp expressions are available inside menu !
Usage of VisualLisp programs (.fas, .vlx) is not available		At this time, there is no chance for LT-Extender to load VisualLisp-specific files (.fas/.vlx) – but *VisualLisp functions may be used (even in .lsp files)** without problems !.You may expect, that future versions of LT-Extender will offer more support for VisualLisp program files
Special programming interfaces are not available under AutoCAD LT		Ads/Arx/AutoLisp applications using special programming interfaces like those of MAP, ADT, LDDT etc. will not work or will not work properly, because these interfaces are not available under AutoCAD LT.
"DemandLoad" feature for Arx applications will not work properly		Starting with version v.1.7, DemandLoad for Arx applications is implemented in compatible mode and works fine ! All previous compatibility problems were solved.
"Object Properties" dialog will ignore applications-defined entities		Special application-defined entities (those entities that sometimes are shown as proxies) will be ignored by the "Object Properties Manager" in most cases.- this seems to be related to the Demand-Load-Feature not working properly. Like described above, manually/automatically loading the apropriate Arx application may solve the problem.
Common Problems and Questions
Applications installers will fail because of missing AutoCAD		After installation you will find an extra folder ".\Acad-Simulation" with some tools and their documentation; this allows to simulate particular AutoCAD version(s) to be installed, so most installers will accept this simulation and will continue to install.