Some users have experienced issues where their Calcomp Digitizer works just fine in new versions of AutoCAD (like AutoCAD 2009, but doesn’t work on older versions of AutoCAD (like AutoCAD 2000) even though both versions are installed on the same computer.
We have reports that simply disabling the Windows User Access Control (UAC) seems to fix this issue!
If you are trying to open a DWG file with AutoCAD and you get the message “Drawing File was created by an incompatible version” it’s because somewhere along the line your AutoCAD DWG files were saved with a newer version of AutoCAD.
Copy your LDT 2005 installation CD media to your hard drive, to a folder path c:\Autodesk\ldt2005
NOTE: If you have more CD’s, simply copy the contents of each CD directly over the top of Disk 1, basically, overwrite all files in your previously copied c:\Autodesk\ldt2005 folder with the files from each of the CDs
Next, start the Longbow Converter tool
select the 2nd tab named “Old AutoCAD Installer Reviver“
pick the c:\Autodesk\ldt2005 folder (where you copied your LDT CDs to on your hard drive)
click the Run Old Installer button.
Read and understand all the prompts before pressing OK.
Once the setup starts, stop and read the next step…
In the setup program, navigate through each setup dialog as normal, with these exceptions… (if you cannot move past the first screen in the setup, see Trouble Shooting below)…
When you click the Install link from your setup you may see a dialog box appear saying – “This program has compatibility issues” – simply check the “Don’t show this message again” and then click the “Run the program without getting help”.
When you arrive at the installation folder path setup dialog, **it’s vitally important to make sure you install to c:\ldt2005 (not C:\Program Files (x86)\Autodesk Land Desktop 2005 that is defaulted)**.
If asked to reboot after the install, say NO
do not reboot
make sure you fully close the AutoCAD setup program (because the Converter is waiting for the setup program to fully close) then
go back to the Converter tool
select the 3rd tab named “Old AutoCAD Program Reviver“
pick the newly installed c:\ldt2005 folder
click the Fix Old Program button.
Now you can run your Autodesk LDT 2005 on Windows 7, Windows 8 and Windows 10, both 32bit and 64bit.
NOTE: When starting AutoCAD, if you see a warning dialog when you run saying “This program has known compatibility issues“, simply click “Don’t show this message again” and then click “Run the Program…“
– If you are seeing this error when running either the “Import LandXML” or “Export LandXML” commands
Using Windows Explorer, backup/copy Disk 1 of your AutoCAD 2016 install media to your hard drive, to a folder path c:\Autodesk\AutoCAD2016
If you have more CD’s, backup/copy them all directly over the top of Disk 1, overwrite all files in your previously copied c:\Autodesk\AutoCAD2016 folder
If you have a single self extracting exe downloaded from Autodesk called something like AutoCAD_2016_English_Win_32_64bit_en-us_Setup.exe
Simply run the exe, it will ask to unzip to a folder inside of c:\Autodesk, make a note of the folder for later use (we’ll refer to it from here as c:\Autodesk\AutoCAD2016), now click OK. Wait until all of the files have extracted, when they do, the AutoCAD 2016 setup will automatically launch – simply close it and move to the next step.
Now, start the Longbow Converter tool, select the 1st tab, pick the c:\Autodesk\AutoCAD2016 folder, and click the Convert button.
Once the conversion process is complete, click Install/Run Setup to start setup. Simply install as normal.
If you are seeing the message “There was a problem sending the command to the program” when you double click a DWG file from Windows Explorer, then the solution is to follow the instructions listed for your AutoCAD version below:
If your are running on Windows 10, Windows 7, Windows 8 or Windows 8.1 and your AutoCAD has suddenly started running slowly, or perhaps you are seeing “AutoCAD is not responding” message more than usual, then read on…
Check your installed programs… See if you have “Microsoft WSE 3.0 Runtime” installed, if so, simply uninstall it – it’s been replaced in Windows 7 and Windows 8 with WCF, which is built in.
If are experiencing crashing problems using the File->Open or File->Save dialog inside of AutoCAD (or any other Autodesk product), there are a few items that can cause this:
New HP Machine If you have recently purchased a new HP computer or you have an HP computer for which you have recently carried out an HP update on Windows 10, Windows 7, Windows 8 or Windows 8.1…Check if you have any of these applications installed:
HP Trust Center
HP Client Security Manager
If so, uninstall them and reboot. We recommend you find an alternative as they cause this issue.
For AutoCAD versions >= 2008, you can try disabling the InfoCenter toolbar at the top right of AutoCAD.
If you know LISP, this code will work for all versions of AutoCAD 2008 or higher
add this code to the end of your acad.lsp (vl-registry-write (strcat “HKEY_LOCAL_MACHINE\\” (vlax-product-key)”\\Applications\\InfoCenterAcConn”) “LOADCTRLS” 0)
If you do not know LISP
Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Autodesk\AutoCAD\<Release.Number>\ACAD-<VerticalCode>:<LanguageCode>\Applications\InfoCenterAcConn
Set the LoadCtrls value to 0
To turn it back on, simply set LoadCtrls value to 76
Remove all USB devices – older versions of AutoCAD don’t understand what a Samsung Phone is, and this can cause crashes.
If you have been opening DWG files from your USB drive, try re-connecting the drive…
The latest Windows Operating systems (Windows 10, Windows 7, Windows 8 and Windows 8.1) correctly use strict permission settings for your personal files (Documents folder etc). The problem is that your older version of AutoCAD does not understand these new permission settings, and this can cause AutoCAD to crash. As a quick test, copy the DWG files that always crash when you save to a USB drive, then create a new folder called c:\MyDwgs, now copy the files from your USB to the c:\MyDwgs folder. Finally, try AutoCAD with the DWG files in c:\MyDwgs – is AutoCAD working now? If so, you can either leave your DWG files in that folder, or you’ll need to relax the permissions on your DWG folder to allow access to AutoCAD.
MSN Plugin – if you see MSN as an entry in your Windows Explorer, uninstall MSN – AutoCAD doesn’t like this.
For versions of AutoCAD >= 2000i here’s a quick fix to bypass the problem (although hard to remember each time) – on starting AutoCAD, type “Options” at the command line, select the ‘Files’ tab, click ‘Browse’, then simply click cancel. Now cancel out of the Options dialog altogether. Try your File->Open… Does it work? If so, you should now be good until the next time you start AutoCAD.
If you have a non-HP machine that is giving you this issue or (2) didn’t work for you, please record below in the comments section:
What computer make you are running
What specific Windows version you are running
What exact version of AutoCAD you are running (e.g. AutoCAD Architecture 2008 32bit)
What AutoCAD service packs (if any) you have applied
What anti-virus software you are running. We’ll see if we can solve this for you…