Because the user intentionally disabled their antivirus to run the crack (a common requirement for pirated software), these infections often go unnoticed until it is too late.
If you insist on using the old portable version, here are fixes for frequent issues. Adobe Illustrator CS3 Portable-
Unlike the bloated, resource-hungry modern versions (which can take up over 3 GB of space), CS3 was lean. Its full installation required roughly 500 MB to 1 GB of hard drive space, making it perfect for portable modifications. Because the user intentionally disabled their antivirus to
: Use a Clipping Mask (Object > Clipping Mask > Make or Ctrl+7 ) to conceal parts of an image without deleting them. Adobe Illustrator CS3 Portable-