For computer expert only...?

i have avg trial version on my off pc....later i install ashampoo antispyware,also trial version...before i install ashampoo, my autocad program suddenly crash and after 1 min it will automatically close.the computer expert told me it because i install free software that make the program crash and antispyware can vice versa become spyware...is this true?

For computer expert only...?virus scanner

Two Antivirus programs can cause conflict and erractic behavior.

Have you uninstall AVG? Look in the Event Viewer located in the Administrative Tools. It will have Error messages that will indicate what the real problem is. If you post tham here only post the 4 most recent errors.

For computer expert only...?anti virus software

autocad is picky like that i found it you install autocad and norton antivirus (they are the fill copies) togther that norton thinks that some of the autocad files are virus's and wipes them out so autocad dosn't work my best advise is to uninstall everything and then reinstall autocad and if you are worried about stuff get Macafee it workslike a charm.
There are fraud antispyware in the net, mostly free. Like what you said, antispyware that might bring spyware into your PC.

Try to remove ashampoo antispyware and re-install your autocad.
remove the ashampoo that you installed. then reinstall your autocad
Per McAfee Site Advisor

ashampoo.com

When we browsed this site, it made unauthorized changes to our test PC.

Makes me want to install their software right now! ROFL
In a way, companies today have "accidentally" let glitches into there antivirus/anitspyware that recognize other antivirus / anitspyware software made by other companies as malicious programs. To avoid this completely uninstall the first program before installing another. If you're afraid of hackers/viruses during the time you switch disconnect from the internet the reconnect after you've installed the new software.