Before diving into fixes, it is essential to understand what the coreldraw.txr file is and why CorelDRAW is looking for it.
If the error only happens when importing a specific file, try opening that file in its original CorelDRAW version and exporting it as a PDF or EPS before bringing it into your target application to bypass the texture engine requirement. Import Corel-Draw File into a Frame - Google Groups texture file coreldraw.txr could not be found